diff --git a/shortcuts/doc/docs_create_v2.go b/shortcuts/doc/docs_create_v2.go
index ffa487456..96a9ed3a2 100644
--- a/shortcuts/doc/docs_create_v2.go
+++ b/shortcuts/doc/docs_create_v2.go
@@ -18,6 +18,7 @@ func v2CreateFlags() []common.Flag {
 	return []common.Flag{
 		{Name: "title", Desc: "document title; when provided, the CLI prepends it to --content as <title>...</title> so the title wins over later content titles"},
 		{Name: "content", Desc: "document body; XML by default or Markdown when --doc-format markdown. " + docsContentSkillHelp + "; use --help for the latest command flags", Input: []string{common.File, common.Stdin}},
+		{Name: "reference-map", Desc: docsReferenceMapFlagDesc, Input: []string{common.File, common.Stdin}},
 		{Name: "doc-format", Desc: "content format; xml is default and supports richer DocxXML blocks, markdown imports plain Markdown", Default: "xml", Enum: []string{"xml", "markdown"}},
 		{Name: "parent-token", Desc: "parent folder token or wiki node token; mutually exclusive with --parent-position"},
 		{Name: "parent-position", Desc: "parent position such as my_library; mutually exclusive with --parent-token"},
@@ -32,8 +33,8 @@ func validateCreateV2(_ context.Context, runtime *common.RuntimeContext) error {
 	if runtime.Changed("title") && title == "" {
 		return errs.NewValidationError(errs.SubtypeInvalidArgument, "--title must not be empty").WithParam("--title")
 	}
-	if runtime.Str("content") == "" && title == "" {
-		return errs.NewValidationError(errs.SubtypeInvalidArgument, "--content is required unless --title is provided").WithParam("--content")
+	if err := validateDocsV2ReferenceMapFlags(runtime); err != nil {
+		return err
 	}
 	if runtime.Str("parent-token") != "" && runtime.Str("parent-position") != "" {
 		return errs.NewValidationError(errs.SubtypeInvalidArgument, "--parent-token and --parent-position are mutually exclusive").WithParams(
@@ -41,11 +42,21 @@ func validateCreateV2(_ context.Context, runtime *common.RuntimeContext) error {
 			errs.InvalidParam{Name: "--parent-position", Reason: "mutually exclusive with --parent-token"},
 		)
 	}
+	if runtime.Str("content") == "" && title == "" {
+		return errs.NewValidationError(errs.SubtypeInvalidArgument, "--content is required unless --title is provided").WithParam("--content")
+	}
+	if runtime.Str("content") != "" {
+		_, err := resolveDocsV2ContentReferenceMap(runtime)
+		return err
+	}
 	return nil
 }
 
 func dryRunCreateV2(_ context.Context, runtime *common.RuntimeContext) *common.DryRunAPI {
-	body := buildCreateBody(runtime)
+	body, err := buildCreateBodyWithHTML5ReferenceMap(runtime)
+	if err != nil {
+		return common.NewDryRunAPI().Set("error", err.Error())
+	}
 	desc := "OpenAPI: create document"
 	if runtime.IsBot() {
 		desc += ". After document creation succeeds in bot mode, the CLI will also try to grant the current CLI user full_access (可管理权限) on the new document."
@@ -57,7 +68,10 @@ func dryRunCreateV2(_ context.Context, runtime *common.RuntimeContext) *common.D
 }
 
 func executeCreateV2(_ context.Context, runtime *common.RuntimeContext) error {
-	body := buildCreateBody(runtime)
+	body, err := buildCreateBodyWithHTML5ReferenceMap(runtime)
+	if err != nil {
+		return err
+	}
 
 	data, err := doDocAPI(runtime, "POST", "/open-apis/docs_ai/v1/documents", body)
 	if err != nil {
@@ -86,7 +100,10 @@ func buildCreateBody(runtime *common.RuntimeContext) map[string]interface{} {
 }
 
 func buildCreateContent(runtime *common.RuntimeContext) string {
-	content := runtime.Str("content")
+	return buildCreateContentWithBody(runtime, runtime.Str("content"))
+}
+
+func buildCreateContentWithBody(runtime *common.RuntimeContext, content string) string {
 	title := strings.TrimSpace(runtime.Str("title"))
 	if title == "" {
 		return content
diff --git a/shortcuts/doc/docs_fetch_v2.go b/shortcuts/doc/docs_fetch_v2.go
index 936b193d4..51d96b225 100644
--- a/shortcuts/doc/docs_fetch_v2.go
+++ b/shortcuts/doc/docs_fetch_v2.go
@@ -14,7 +14,7 @@ import (
 	"github.com/larksuite/cli/shortcuts/common"
 )
 
-const docsFetchExtraParam = `{"enable_user_cite_reference_map":true}`
+const docsFetchExtraParam = `{"enable_user_cite_reference_map":true,"return_html5_block_data":true}`
 
 // v2FetchFlags returns the flag definitions for the v2 (OpenAPI) fetch path.
 func v2FetchFlags() []common.Flag {
@@ -71,6 +71,9 @@ func executeFetchV2(_ context.Context, runtime *common.RuntimeContext) error {
 	if err != nil {
 		return err
 	}
+	if err := processHTML5BlockReferenceMapForFetch(runtime, effectiveFetchFormat(runtime), ref.Token, data); err != nil {
+		return err
+	}
 	if warning := addFetchDetailDowngradeWarning(runtime, data); warning != "" && runtime.Format == "pretty" {
 		fmt.Fprintf(runtime.IO().ErrOut, "warning: %s\n", warning)
 	}
diff --git a/shortcuts/doc/docs_fetch_v2_test.go b/shortcuts/doc/docs_fetch_v2_test.go
index 2ba7c0b0c..933ea2ffc 100644
--- a/shortcuts/doc/docs_fetch_v2_test.go
+++ b/shortcuts/doc/docs_fetch_v2_test.go
@@ -505,14 +505,14 @@ func TestBuildFetchBodyIncludesFetchExtraParamByDefault(t *testing.T) {
 	if got["enable_user_cite_reference_map"] != true {
 		t.Fatalf("enable_user_cite_reference_map = %#v, want true in %#v", got["enable_user_cite_reference_map"], got)
 	}
-	if _, ok := got["return_html5_block_data"]; ok {
-		t.Fatalf("extra_param should not request html5 block data: %#v", got)
+	if got["return_html5_block_data"] != true {
+		t.Fatalf("return_html5_block_data = %#v, want true in %#v", got["return_html5_block_data"], got)
 	}
 	if _, ok := got["reference_map_mode"]; ok {
 		t.Fatalf("extra_param should not use legacy reference_map_mode: %#v", got)
 	}
-	if len(got) != 1 {
-		t.Fatalf("extra_param should only contain fetch reference_map toggle: %#v", got)
+	if len(got) != 2 {
+		t.Fatalf("extra_param should only contain fetch reference_map and html5 data toggles: %#v", got)
 	}
 }
 
@@ -579,6 +579,34 @@ func TestDocsFetchIMMarkdownRequestsMarkdownFromAPI(t *testing.T) {
 	}
 }
 
+func TestDocsFetchIMMarkdownIgnoresHTML5BlockInsideCodeFence(t *testing.T) {
+	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
+
+	f, stdout, _, reg := cmdutil.TestFactory(t, docsTestConfigWithAppID("docs-fetch-im-markdown-code-fence"))
+	registerDocsAIStub(reg, "POST", "/open-apis/docs_ai/v1/documents/doxcnFetchIMMarkdownFence/fetch", map[string]interface{}{
+		"document": map[string]interface{}{
+			"document_id": "doxcnFetchIMMarkdownFence",
+			"revision_id": float64(1),
+			"content":     "```xml\n<html5-block data-ref=\"html5_1\"></html5-block>\n```\n",
+		},
+	})
+
+	err := mountAndRunDocs(t, DocsFetch, []string{
+		"+fetch",
+		"--doc", "doxcnFetchIMMarkdownFence",
+		"--doc-format", "im-markdown",
+		"--format", "json",
+		"--as", "bot",
+	}, f, stdout)
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	var envelope map[string]interface{}
+	if err := json.Unmarshal(stdout.Bytes(), &envelope); err != nil {
+		t.Fatalf("decode output: %v\nraw=%s", err, stdout.String())
+	}
+}
+
 func TestDocsFetchMarkdownDetailDowngradesToSimple(t *testing.T) {
 	t.Parallel()
 
diff --git a/shortcuts/doc/docs_update_test.go b/shortcuts/doc/docs_update_test.go
index 6d8dcfd47..4d67ca321 100644
--- a/shortcuts/doc/docs_update_test.go
+++ b/shortcuts/doc/docs_update_test.go
@@ -4,6 +4,7 @@ package doc
 
 import (
 	"context"
+	"encoding/json"
 	"errors"
 	"strings"
 	"testing"
@@ -63,6 +64,28 @@ func TestDocsUpdateDryRunIgnoresAPIVersionCompatFlag(t *testing.T) {
 	}
 }
 
+func TestDocsUpdateDryRunReportsReferenceMapBuildError(t *testing.T) {
+	t.Parallel()
+
+	runtime := newUpdateShortcutTestRuntime(t, "", map[string]string{
+		"content": `<html5-block path="@missing.html"></html5-block>`,
+	})
+	raw, err := json.Marshal(dryRunUpdateV2(context.Background(), runtime))
+	if err != nil {
+		t.Fatalf("marshal dry-run output: %v", err)
+	}
+	var dry map[string]interface{}
+	if err := json.Unmarshal(raw, &dry); err != nil {
+		t.Fatalf("decode dry-run output: %v\n%s", err, raw)
+	}
+	if got := common.GetString(dry, "error"); !strings.Contains(got, `html5-block path "missing.html" cannot be read`) {
+		t.Fatalf("dry-run error = %q, want reference_map build error; raw=%s", got, raw)
+	}
+	if api, _ := dry["api"].([]interface{}); len(api) > 0 {
+		t.Fatalf("dry-run should not fall back to a request body after build error: %s", raw)
+	}
+}
+
 func TestDocsUpdateV2ReferenceMapFlagIsPublicFileInput(t *testing.T) {
 	t.Parallel()
 
diff --git a/shortcuts/doc/docs_update_v2.go b/shortcuts/doc/docs_update_v2.go
index d9c12b47b..f610168c8 100644
--- a/shortcuts/doc/docs_update_v2.go
+++ b/shortcuts/doc/docs_update_v2.go
@@ -24,7 +24,9 @@ var validCommandsV2 = map[string]bool{
 	"append":                  true,
 }
 
-const docsUpdateReferenceMapFlagDesc = "结构化 `reference_map` JSON object；当 `--content` 使用正文外部载荷 / 引用映射时与内容一起传给服务，支持直接 JSON、`@reference-map.json`（相对路径）或 `-` 从 stdin 读取。通常用于回写已有 `document.reference_map`。"
+const docsReferenceMapFlagDesc = "结构化 `reference_map` JSON object；必须与 `--content` 一起使用。普通写入优先把结构写在正文里；`--reference-map` 主要用于保留或回放已有 `document.reference_map`。支持直接 JSON、`@reference-map.json`（相对路径）或 `-` 从 stdin 读取。"
+
+const docsUpdateReferenceMapFlagDesc = docsReferenceMapFlagDesc
 
 // v2UpdateFlags returns the flag definitions for the v2 (OpenAPI) update path.
 func v2UpdateFlags() []common.Flag {
@@ -115,13 +117,20 @@ func validateUpdateV2(_ context.Context, runtime *common.RuntimeContext) error {
 			return errs.NewValidationError(errs.SubtypeInvalidArgument, "--command append requires --content").WithParam("--content")
 		}
 	}
+	if content != "" {
+		_, err := resolveDocsV2ContentReferenceMap(runtime)
+		return err
+	}
 	return nil
 }
 
 func dryRunUpdateV2(_ context.Context, runtime *common.RuntimeContext) *common.DryRunAPI {
 	// Validate has already accepted --doc; parseDocumentRef cannot fail here.
 	ref, _ := parseDocumentRef(runtime.Str("doc"))
-	body, _ := buildUpdateBodyWithReferenceMap(runtime)
+	body, err := buildUpdateBodyWithHTML5ReferenceMap(runtime)
+	if err != nil {
+		return common.NewDryRunAPI().Set("error", err.Error())
+	}
 	apiPath := fmt.Sprintf("/open-apis/docs_ai/v1/documents/%s", ref.Token)
 	return common.NewDryRunAPI().
 		PUT(apiPath).
@@ -134,7 +143,7 @@ func executeUpdateV2(_ context.Context, runtime *common.RuntimeContext) error {
 	ref, _ := parseDocumentRef(runtime.Str("doc"))
 
 	apiPath := fmt.Sprintf("/open-apis/docs_ai/v1/documents/%s", ref.Token)
-	body, err := buildUpdateBodyWithReferenceMap(runtime)
+	body, err := buildUpdateBodyWithHTML5ReferenceMap(runtime)
 	if err != nil {
 		return err
 	}
diff --git a/shortcuts/doc/html5_block_resources.go b/shortcuts/doc/html5_block_resources.go
new file mode 100644
index 000000000..80955ba58
--- /dev/null
+++ b/shortcuts/doc/html5_block_resources.go
@@ -0,0 +1,696 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package doc
+
+import (
+	"bytes"
+	"encoding/json"
+	"encoding/xml"
+	"errors"
+	"fmt"
+	"io"
+	"path/filepath"
+	"regexp"
+	"strings"
+
+	"github.com/larksuite/cli/errs"
+	"github.com/larksuite/cli/extension/fileio"
+	"github.com/larksuite/cli/internal/cmdutil"
+	"github.com/larksuite/cli/shortcuts/common"
+)
+
+const (
+	html5BlockTag             = "html5-block"
+	html5BlockPathAttr        = "path"
+	html5BlockDataRefAttr     = "data-ref"
+	html5BlockDataAttr        = "data"
+	html5BlockReferenceRoot   = "doc-fetch-resources"
+	html5BlockReferenceMaxRaw = 1024
+)
+
+var (
+	html5BlockStartTagPattern = regexp.MustCompile(`(?is)<html5-block\b[^>]*>`)
+	html5BlockElementPattern  = regexp.MustCompile(`(?is)<html5-block\b[^>]*>(.*?)</html5-block>`)
+	html5BlockSafeNamePattern = regexp.MustCompile(`^[A-Za-z0-9._-]+$`)
+)
+
+type html5BlockReferenceEntry struct {
+	Data   string `json:"data,omitempty"`
+	Path   string `json:"path,omitempty"`
+	UserID string `json:"user_id,omitempty"`
+}
+
+type html5BlockReferenceMap map[string]map[string]html5BlockReferenceEntry
+
+type docsV2WriteInput struct {
+	Content      string
+	ReferenceMap map[string]interface{}
+}
+
+type html5BlockAttr struct {
+	Name  string
+	Value string
+}
+
+type html5BlockStartTag struct {
+	Attrs       []html5BlockAttr
+	SelfClosing bool
+}
+
+func buildCreateBodyWithHTML5ReferenceMap(runtime *common.RuntimeContext) (map[string]interface{}, error) {
+	body := buildCreateBody(runtime)
+	if runtime.Str("content") == "" && !runtime.Changed("reference-map") {
+		return body, nil
+	}
+	input, err := resolveDocsV2ContentReferenceMap(runtime)
+	if err != nil {
+		return nil, err
+	}
+	body["content"] = buildCreateContentWithBody(runtime, input.Content)
+	if len(input.ReferenceMap) > 0 {
+		body["reference_map"] = input.ReferenceMap
+	}
+	return body, nil
+}
+
+func buildUpdateBodyWithHTML5ReferenceMap(runtime *common.RuntimeContext) (map[string]interface{}, error) {
+	body := buildUpdateBody(runtime)
+	input, err := resolveDocsV2ContentReferenceMap(runtime)
+	if err != nil {
+		return nil, err
+	}
+	if input.Content != "" {
+		body["content"] = input.Content
+	}
+	if len(input.ReferenceMap) > 0 {
+		body["reference_map"] = input.ReferenceMap
+	}
+	return body, nil
+}
+
+func validateDocsV2ReferenceMapFlags(runtime *common.RuntimeContext) error {
+	if runtime.Changed("reference-map") && runtime.Str("content") == "" {
+		return errs.NewValidationError(errs.SubtypeInvalidArgument, "--reference-map requires --content").WithParam("--reference-map")
+	}
+	return nil
+}
+
+func resolveDocsV2ContentReferenceMap(runtime *common.RuntimeContext) (docsV2WriteInput, error) {
+	input := docsV2WriteInput{Content: runtime.Str("content")}
+	if raw := runtime.Str("reference-map"); strings.TrimSpace(raw) != "" {
+		refMap, err := parseReferenceMapObject(raw, "--reference-map")
+		if err != nil {
+			return docsV2WriteInput{}, err
+		}
+		input.ReferenceMap = refMap
+	}
+	return prepareDocsV2WriteInput(runtime, input)
+}
+
+func prepareDocsV2WriteInput(runtime *common.RuntimeContext, input docsV2WriteInput) (docsV2WriteInput, error) {
+	refMap := cloneReferenceMapObject(input.ReferenceMap)
+	html5RefMap, err := html5ReferenceMapFromObject(refMap)
+	if err != nil {
+		return docsV2WriteInput{}, err
+	}
+
+	content, html5RefMap, err := prepareHTML5BlockWriteContent(runtime, runtime.Str("doc-format"), input.Content, html5RefMap)
+	if err != nil {
+		return docsV2WriteInput{}, err
+	}
+	if err := resolveReferenceMapPaths(runtime, html5RefMap); err != nil {
+		return docsV2WriteInput{}, err
+	}
+	refMap = mergeHTML5ReferenceMap(refMap, html5RefMap)
+	return docsV2WriteInput{
+		Content:      content,
+		ReferenceMap: refMap,
+	}, nil
+}
+
+func parseReferenceMapObject(raw string, label string) (map[string]interface{}, error) {
+	if len(bytes.TrimSpace([]byte(raw))) == 0 || string(bytes.TrimSpace([]byte(raw))) == "null" {
+		return nil, nil
+	}
+	var refMap map[string]interface{}
+	if err := json.Unmarshal([]byte(raw), &refMap); err != nil {
+		return nil, common.ValidationErrorf("%s is not valid reference_map JSON: %v", label, err).WithParam(label).WithCause(err)
+	}
+	return refMap, nil
+}
+
+func parseHTML5BlockReferenceMapBytes(raw []byte, label string) (html5BlockReferenceMap, error) {
+	if len(bytes.TrimSpace(raw)) == 0 || string(bytes.TrimSpace(raw)) == "null" {
+		return nil, nil
+	}
+	var refMap html5BlockReferenceMap
+	if err := json.Unmarshal(raw, &refMap); err != nil {
+		return nil, common.ValidationErrorf("%s is not valid reference_map JSON: %v", label, err).WithParam(label).WithCause(err)
+	}
+	return compactReferenceMap(refMap), nil
+}
+
+func prepareHTML5BlockWriteContent(runtime *common.RuntimeContext, format string, content string, refMap html5BlockReferenceMap) (string, html5BlockReferenceMap, error) {
+	if !strings.Contains(content, "<html5-block") {
+		return content, compactReferenceMap(refMap), nil
+	}
+	if err := validateHTML5BlockWriteElementBodies(format, content); err != nil {
+		return "", nil, err
+	}
+
+	refMap = cloneReferenceMap(refMap)
+	if refMap == nil {
+		refMap = html5BlockReferenceMap{}
+	}
+	ensureReferenceGroup(refMap, html5BlockTag)
+	nextRef := nextHTML5BlockRef(refMap)
+
+	rewrite := func(segment string) (string, error) {
+		return rewriteHTML5BlockStartTags(segment, func(raw string) (string, error) {
+			tag, err := parseHTML5BlockStartTag(raw)
+			if err != nil {
+				return "", common.ValidationErrorf("invalid html5-block tag: %v", err).WithParam("html5-block")
+			}
+			if tag.hasAttr(html5BlockDataAttr) {
+				return "", common.ValidationErrorf("html5-block data is reserved for SDK internals; use data-ref with reference_map or path=\"@relative.html\"").WithParam("html5-block")
+			}
+
+			pathValue, hasPath := tag.attr(html5BlockPathAttr)
+			dataRef, hasDataRef := tag.attr(html5BlockDataRefAttr)
+			if hasPath && hasDataRef {
+				return "", common.ValidationErrorf("html5-block cannot contain both path and data-ref").WithParam("html5-block")
+			}
+			if hasDataRef {
+				ref := strings.TrimSpace(dataRef)
+				if ref == "" {
+					return "", common.ValidationErrorf("html5-block data-ref cannot be empty").WithParam("data-ref")
+				}
+				if _, ok := refMap[html5BlockTag][ref]; !ok {
+					return "", common.ValidationErrorf("reference_map.%s.%s is required for html5-block data-ref", html5BlockTag, ref).WithParam("reference_map")
+				}
+				return tag.render(false), nil
+			}
+			if !hasPath {
+				return "", common.ValidationErrorf("html5-block requires path=\"@relative.html\" or data-ref with reference_map").WithParam("html5-block")
+			}
+
+			data, err := readHTML5BlockPath(runtime, pathValue, "html5-block path")
+			if err != nil {
+				return "", err
+			}
+			ref := nextRef()
+			refMap[html5BlockTag][ref] = html5BlockReferenceEntry{Data: data}
+			tag.removeAttrs(html5BlockPathAttr, html5BlockDataRefAttr, html5BlockDataAttr)
+			tag.Attrs = append(tag.Attrs, html5BlockAttr{Name: html5BlockDataRefAttr, Value: ref})
+			return tag.render(false), nil
+		})
+	}
+
+	var (
+		out string
+		err error
+	)
+	if strings.TrimSpace(format) == "markdown" {
+		out = applyOutsideCodeFences(content, func(segment string) string {
+			if err != nil {
+				return segment
+			}
+			outSegment, rewriteErr := rewrite(segment)
+			if rewriteErr != nil {
+				err = rewriteErr
+				return segment
+			}
+			return outSegment
+		})
+	} else {
+		out, err = rewrite(content)
+	}
+	if err != nil {
+		return "", nil, err
+	}
+	return out, compactReferenceMap(refMap), nil
+}
+
+func validateHTML5BlockWriteElementBodies(format string, content string) error {
+	validateSegment := func(segment string) error {
+		matches := html5BlockElementPattern.FindAllStringSubmatchIndex(segment, -1)
+		for _, match := range matches {
+			if len(match) < 4 || match[2] < 0 || match[3] < 0 {
+				continue
+			}
+			if strings.TrimSpace(segment[match[2]:match[3]]) != "" {
+				return common.ValidationErrorf("html5-block content must be loaded from path=\"@relative.html\" or reference_map; remove content between <html5-block> and </html5-block>").WithParam("html5-block")
+			}
+		}
+		return nil
+	}
+
+	if strings.TrimSpace(format) != "markdown" {
+		return validateSegment(content)
+	}
+
+	var validateErr error
+	_ = applyOutsideCodeFences(content, func(segment string) string {
+		if validateErr != nil {
+			return segment
+		}
+		validateErr = validateSegment(segment)
+		return segment
+	})
+	return validateErr
+}
+
+func processHTML5BlockReferenceMapForFetch(runtime *common.RuntimeContext, format string, docToken string, data map[string]interface{}) error {
+	doc, _ := data["document"].(map[string]interface{})
+	if doc == nil {
+		return nil
+	}
+	content, _ := doc["content"].(string)
+	if !hasProcessableHTML5Block(format, content) {
+		return nil
+	}
+
+	refMap, err := referenceMapFromDocument(doc)
+	if err != nil {
+		return err
+	}
+	group := refMap[html5BlockTag]
+	if group == nil {
+		return common.ValidationErrorf("document.reference_map.%s is required for fetched html5-block content", html5BlockTag).WithParam("reference_map")
+	}
+
+	if err := validateFetchedHTML5BlockRefs(format, content, refMap); err != nil {
+		return err
+	}
+
+	changed := false
+	for ref, entry := range group {
+		if entry.Data == "" || len([]byte(entry.Data)) <= html5BlockReferenceMaxRaw {
+			continue
+		}
+		relPath, err := writeHTML5BlockReferenceFile(runtime, docToken, ref, entry.Data)
+		if err != nil {
+			return err
+		}
+		entry.Data = ""
+		entry.Path = "@" + filepath.ToSlash(relPath)
+		group[ref] = entry
+		changed = true
+	}
+	if changed {
+		doc["reference_map"] = refMap
+	}
+	return nil
+}
+
+func referenceMapFromDocument(doc map[string]interface{}) (html5BlockReferenceMap, error) {
+	raw, ok := doc["reference_map"]
+	if !ok || raw == nil {
+		return nil, common.ValidationErrorf("document.reference_map is required for fetched html5-block content").WithParam("reference_map")
+	}
+	refMap, err := referenceMapFromValue(raw, "document.reference_map")
+	if err != nil {
+		return nil, err
+	}
+	if len(refMap) == 0 {
+		return nil, common.ValidationErrorf("document.reference_map is required for fetched html5-block content").WithParam("reference_map")
+	}
+	return refMap, nil
+}
+
+func referenceMapFromValue(value interface{}, label string) (html5BlockReferenceMap, error) {
+	if typed, ok := value.(html5BlockReferenceMap); ok {
+		return compactReferenceMap(typed), nil
+	}
+	raw, err := json.Marshal(value)
+	if err != nil {
+		return nil, common.ValidationErrorf("%s is not valid reference_map JSON: %v", label, err).WithParam("reference_map").WithCause(err)
+	}
+	return parseHTML5BlockReferenceMapBytes(raw, label)
+}
+
+func validateFetchedHTML5BlockRefs(format string, content string, refMap html5BlockReferenceMap) error {
+	validateSegment := func(segment string) error {
+		_, err := rewriteHTML5BlockStartTags(segment, func(raw string) (string, error) {
+			tag, parseErr := parseHTML5BlockStartTag(raw)
+			if parseErr != nil {
+				return raw, common.ValidationErrorf("invalid html5-block tag in fetched content: %v", parseErr).WithParam("html5-block")
+			}
+			ref, ok := tag.attr(html5BlockDataRefAttr)
+			if !ok || strings.TrimSpace(ref) == "" {
+				return raw, common.ValidationErrorf("fetched html5-block is missing data-ref; cannot resolve HTML reference").WithParam("html5-block")
+			}
+			ref = strings.TrimSpace(ref)
+			if _, ok := refMap[html5BlockTag][ref]; !ok {
+				return raw, common.ValidationErrorf("document.reference_map.%s.%s is missing; cannot resolve html5-block. Re-run fetch or check that the upstream document.reference_map field includes this ref.", html5BlockTag, ref).WithParam("reference_map")
+			}
+			return raw, nil
+		})
+		return err
+	}
+
+	if strings.TrimSpace(format) != "markdown" {
+		return validateSegment(content)
+	}
+	var validateErr error
+	_ = applyOutsideCodeFences(content, func(segment string) string {
+		if validateErr != nil {
+			return segment
+		}
+		validateErr = validateSegment(segment)
+		return segment
+	})
+	return validateErr
+}
+
+func resolveReferenceMapPaths(runtime *common.RuntimeContext, refMap html5BlockReferenceMap) error {
+	for typ, group := range refMap {
+		for ref, entry := range group {
+			if strings.TrimSpace(entry.Path) == "" {
+				continue
+			}
+			if entry.Data != "" {
+				return common.ValidationErrorf("reference_map.%s.%s must use either data or path, not both", typ, ref).WithParam("reference_map")
+			}
+			data, err := readHTML5BlockPath(runtime, entry.Path, fmt.Sprintf("reference_map.%s.%s.path", typ, ref))
+			if err != nil {
+				return err
+			}
+			entry.Data = data
+			entry.Path = ""
+			group[ref] = entry
+		}
+	}
+	return nil
+}
+
+func readHTML5BlockPath(runtime *common.RuntimeContext, pathValue string, label string) (string, error) {
+	pathRaw := strings.TrimSpace(pathValue)
+	if !strings.HasPrefix(pathRaw, "@") {
+		return "", common.ValidationErrorf("%s %q must start with @, for example @widget.html", label, pathValue).WithParam("path")
+	}
+	relPath := strings.TrimSpace(strings.TrimPrefix(pathRaw, "@"))
+	if relPath == "" {
+		return "", common.ValidationErrorf("%s cannot be empty after @", label).WithParam("path")
+	}
+	clean := filepath.Clean(relPath)
+	if filepath.IsAbs(clean) || clean == "." || clean == ".." || strings.HasPrefix(clean, ".."+string(filepath.Separator)) {
+		return "", common.ValidationErrorf("%s %q must be a relative path within the current working directory", label, pathValue).WithParam("path")
+	}
+	if strings.ToLower(filepath.Ext(clean)) != ".html" {
+		return "", common.ValidationErrorf("%s %q must point to a .html file", label, pathValue).WithParam("path")
+	}
+	data, err := cmdutil.ReadInputFile(runtime.FileIO(), clean)
+	if err != nil {
+		return "", common.ValidationErrorf("%s %q cannot be read from the current working directory; check that the file exists relative to where lark-cli is running: %v", label, clean, err).WithParam("path").WithCause(err)
+	}
+	return string(data), nil
+}
+
+func hasProcessableHTML5Block(format string, content string) bool {
+	if !strings.Contains(content, "<html5-block") {
+		return false
+	}
+	if strings.TrimSpace(format) != "markdown" {
+		return true
+	}
+	found := false
+	_ = applyOutsideCodeFences(content, func(segment string) string {
+		if strings.Contains(segment, "<html5-block") {
+			found = true
+		}
+		return segment
+	})
+	return found
+}
+
+func applyOutsideCodeFences(content string, fn func(segment string) string) string {
+	var out strings.Builder
+	var segment strings.Builder
+	inFence := false
+
+	flush := func() {
+		if segment.Len() == 0 {
+			return
+		}
+		out.WriteString(fn(segment.String()))
+		segment.Reset()
+	}
+
+	for _, line := range strings.SplitAfter(content, "\n") {
+		trimmed := strings.TrimSpace(line)
+		if strings.HasPrefix(trimmed, "```") || strings.HasPrefix(trimmed, "~~~") {
+			if !inFence {
+				flush()
+				inFence = true
+			} else {
+				inFence = false
+			}
+			out.WriteString(line)
+			continue
+		}
+		if inFence {
+			out.WriteString(line)
+		} else {
+			segment.WriteString(line)
+		}
+	}
+	flush()
+	return out.String()
+}
+
+func cloneReferenceMap(refMap html5BlockReferenceMap) html5BlockReferenceMap {
+	if len(refMap) == 0 {
+		return nil
+	}
+	out := make(html5BlockReferenceMap, len(refMap))
+	for typ, group := range refMap {
+		if len(group) == 0 {
+			continue
+		}
+		outGroup := make(map[string]html5BlockReferenceEntry, len(group))
+		for ref, entry := range group {
+			outGroup[ref] = entry
+		}
+		out[typ] = outGroup
+	}
+	return out
+}
+
+func cloneReferenceMapObject(refMap map[string]interface{}) map[string]interface{} {
+	if len(refMap) == 0 {
+		return nil
+	}
+	out := make(map[string]interface{}, len(refMap))
+	for key, value := range refMap {
+		out[key] = value
+	}
+	return out
+}
+
+func html5ReferenceMapFromObject(refMap map[string]interface{}) (html5BlockReferenceMap, error) {
+	if len(refMap) == 0 {
+		return nil, nil
+	}
+	group, ok := refMap[html5BlockTag]
+	if !ok || group == nil {
+		return nil, nil
+	}
+	return referenceMapFromValue(map[string]interface{}{html5BlockTag: group}, "reference_map."+html5BlockTag)
+}
+
+func mergeHTML5ReferenceMap(refMap map[string]interface{}, html5RefMap html5BlockReferenceMap) map[string]interface{} {
+	group := html5RefMap[html5BlockTag]
+	if len(group) == 0 {
+		return refMap
+	}
+	if refMap == nil {
+		refMap = map[string]interface{}{}
+	}
+	refMap[html5BlockTag] = group
+	return refMap
+}
+
+func compactReferenceMap(refMap html5BlockReferenceMap) html5BlockReferenceMap {
+	if len(refMap) == 0 {
+		return nil
+	}
+	out := make(html5BlockReferenceMap, len(refMap))
+	for typ, group := range refMap {
+		if len(group) == 0 {
+			continue
+		}
+		out[typ] = group
+	}
+	if len(out) == 0 {
+		return nil
+	}
+	return out
+}
+
+func ensureReferenceGroup(refMap html5BlockReferenceMap, typ string) {
+	if refMap[typ] == nil {
+		refMap[typ] = map[string]html5BlockReferenceEntry{}
+	}
+}
+
+func nextHTML5BlockRef(refMap html5BlockReferenceMap) func() string {
+	next := 1
+	return func() string {
+		for {
+			ref := fmt.Sprintf("html5_%d", next)
+			next++
+			if _, exists := refMap[html5BlockTag][ref]; !exists {
+				return ref
+			}
+		}
+	}
+}
+
+func writeHTML5BlockReferenceFile(runtime *common.RuntimeContext, docToken string, ref string, html string) (string, error) {
+	if !isSafeHTML5BlockResourceName(docToken) {
+		return "", common.ValidationErrorf("document_id %q cannot be used as a resource directory name", docToken).WithParam("document_id")
+	}
+	if !isSafeHTML5BlockResourceName(ref) {
+		return "", common.ValidationErrorf("html5-block data-ref %q cannot be used as a file name", ref).WithParam("data-ref")
+	}
+	relPath := filepath.Join(html5BlockReferenceRoot, docToken, ref+".html")
+	data := []byte(html)
+	_, err := runtime.FileIO().Save(relPath, fileio.SaveOptions{
+		ContentType:   "text/html; charset=utf-8",
+		ContentLength: int64(len(data)),
+	}, bytes.NewReader(data))
+	if err != nil {
+		if errors.Is(err, fileio.ErrPathValidation) {
+			return "", common.ValidationErrorf("cannot write html5-block reference file %q: %v", relPath, err).WithParam("reference_map").WithCause(err)
+		}
+		return "", errs.NewInternalError(errs.SubtypeFileIO, "cannot write html5-block reference file %q: %v", relPath, err).WithCause(err)
+	}
+	return relPath, nil
+}
+
+func isSafeHTML5BlockResourceName(name string) bool {
+	return name != "." && name != ".." && html5BlockSafeNamePattern.MatchString(name)
+}
+
+func rewriteHTML5BlockStartTags(content string, fn func(raw string) (string, error)) (string, error) {
+	var rewriteErr error
+	out := html5BlockStartTagPattern.ReplaceAllStringFunc(content, func(raw string) string {
+		if rewriteErr != nil {
+			return raw
+		}
+		rewritten, err := fn(raw)
+		if err != nil {
+			rewriteErr = err
+			return raw
+		}
+		return rewritten
+	})
+	if rewriteErr != nil {
+		return "", rewriteErr
+	}
+	return out, nil
+}
+
+func parseHTML5BlockStartTag(raw string) (html5BlockStartTag, error) {
+	trimmed := strings.TrimSpace(raw)
+	selfClosing := strings.HasSuffix(trimmed, "/>")
+	decoder := xml.NewDecoder(strings.NewReader(raw))
+	for {
+		tok, err := decoder.Token()
+		if err != nil {
+			if errors.Is(err, io.EOF) {
+				break
+			}
+			return html5BlockStartTag{}, err
+		}
+		start, ok := tok.(xml.StartElement)
+		if !ok {
+			continue
+		}
+		if start.Name.Local != html5BlockTag {
+			return html5BlockStartTag{}, fmt.Errorf("expected <%s>, got <%s>", html5BlockTag, start.Name.Local) //nolint:forbidigo // intermediate parse helper; callers wrap with typed validation errors.
+		}
+		attrs := make([]html5BlockAttr, 0, len(start.Attr))
+		for _, attr := range start.Attr {
+			attrs = append(attrs, html5BlockAttr{Name: attr.Name.Local, Value: attr.Value})
+		}
+		return html5BlockStartTag{Attrs: attrs, SelfClosing: selfClosing}, nil
+	}
+	return html5BlockStartTag{}, fmt.Errorf("missing start element") //nolint:forbidigo // intermediate parse helper; callers wrap with typed validation errors.
+}
+
+func (t html5BlockStartTag) attr(name string) (string, bool) {
+	for _, attr := range t.Attrs {
+		if attr.Name == name {
+			return attr.Value, true
+		}
+	}
+	return "", false
+}
+
+func (t html5BlockStartTag) hasAttr(name string) bool {
+	_, ok := t.attr(name)
+	return ok
+}
+
+func (t *html5BlockStartTag) removeAttrs(names ...string) {
+	remove := make(map[string]struct{}, len(names))
+	for _, name := range names {
+		remove[name] = struct{}{}
+	}
+	attrs := t.Attrs[:0]
+	for _, attr := range t.Attrs {
+		if _, ok := remove[attr.Name]; ok {
+			continue
+		}
+		attrs = append(attrs, attr)
+	}
+	t.Attrs = attrs
+}
+
+func (t html5BlockStartTag) render(selfClosing bool) string {
+	var b strings.Builder
+	b.WriteByte('<')
+	b.WriteString(html5BlockTag)
+	for _, attr := range t.Attrs {
+		b.WriteByte(' ')
+		b.WriteString(attr.Name)
+		b.WriteString(`="`)
+		b.WriteString(escapeXMLAttr(attr.Value))
+		b.WriteByte('"')
+	}
+	if selfClosing {
+		b.WriteString("/>")
+	} else {
+		b.WriteByte('>')
+	}
+	if t.SelfClosing && !selfClosing {
+		b.WriteString("</")
+		b.WriteString(html5BlockTag)
+		b.WriteByte('>')
+	}
+	return b.String()
+}
+
+func escapeXMLAttr(value string) string {
+	var b strings.Builder
+	for _, r := range value {
+		switch r {
+		case '&':
+			b.WriteString("&amp;")
+		case '<':
+			b.WriteString("&lt;")
+		case '>':
+			b.WriteString("&gt;")
+		case '"':
+			b.WriteString("&quot;")
+		case '\'':
+			b.WriteString("&apos;")
+		default:
+			b.WriteRune(r)
+		}
+	}
+	return b.String()
+}
diff --git a/shortcuts/doc/html5_block_resources_test.go b/shortcuts/doc/html5_block_resources_test.go
new file mode 100644
index 000000000..70b747a3c
--- /dev/null
+++ b/shortcuts/doc/html5_block_resources_test.go
@@ -0,0 +1,563 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package doc
+
+import (
+	"bytes"
+	"encoding/json"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	"github.com/larksuite/cli/internal/cmdutil"
+	"github.com/larksuite/cli/internal/httpmock"
+	"github.com/larksuite/cli/shortcuts/common"
+)
+
+func TestDocsV2ReferenceMapFlagIsPublicFileInput(t *testing.T) {
+	for name, flags := range map[string][]common.Flag{
+		"create": v2CreateFlags(),
+		"update": v2UpdateFlags(),
+	} {
+		t.Run(name, func(t *testing.T) {
+			flag := findDocsTestFlag(flags, "reference-map")
+			if flag.Name == "" {
+				t.Fatal("reference-map flag not found")
+			}
+			if flag.Hidden {
+				t.Fatal("reference-map flag should be public")
+			}
+			if !hasDocsTestInput(flag, common.File) || !hasDocsTestInput(flag, common.Stdin) {
+				t.Fatalf("reference-map Input = %#v, want file and stdin", flag.Input)
+			}
+			if !strings.Contains(flag.Desc, "@reference-map.json") {
+				t.Fatalf("reference-map help should mention @file support, got %q", flag.Desc)
+			}
+		})
+	}
+}
+
+func TestDocsV2InputFlagIsNotAvailable(t *testing.T) {
+	for name, flags := range map[string][]common.Flag{
+		"create": v2CreateFlags(),
+		"update": v2UpdateFlags(),
+	} {
+		t.Run(name, func(t *testing.T) {
+			for _, flag := range flags {
+				if flag.Name == "input" {
+					t.Fatalf("%s should not expose input flag", name)
+				}
+			}
+		})
+	}
+}
+
+func TestDocsUpdateV2ReferenceMapPreservesGenericGroups(t *testing.T) {
+	t.Parallel()
+
+	runtime := newUpdateShortcutTestRuntime(t, "", map[string]string{
+		"command":       "append",
+		"content":       `<p><widget data-ref="r1"></widget></p>`,
+		"reference-map": `{"widget":{"r1":{"label":"widget-ref-value"}}}`,
+	})
+	body, err := buildUpdateBodyWithHTML5ReferenceMap(runtime)
+	if err != nil {
+		t.Fatalf("buildUpdateBodyWithHTML5ReferenceMap: %v", err)
+	}
+
+	refMap, ok := body["reference_map"].(map[string]interface{})
+	if !ok {
+		t.Fatalf("reference_map = %#v, want object", body["reference_map"])
+	}
+	widget, _ := refMap["widget"].(map[string]interface{})
+	r1, _ := widget["r1"].(map[string]interface{})
+	if got := r1["label"]; got != "widget-ref-value" {
+		t.Fatalf("reference_map.widget.r1.label = %#v, want widget-ref-value; body=%#v", got, body)
+	}
+}
+
+func TestDocsCreateV2HTML5BlockReferenceMapFromPath(t *testing.T) {
+	dir := t.TempDir()
+	cmdutil.TestChdir(t, dir)
+	if err := os.WriteFile("widget.html", []byte("<html><body>hello</body></html>"), 0o600); err != nil {
+		t.Fatalf("WriteFile() error: %v", err)
+	}
+
+	f, stdout, _, reg := cmdutil.TestFactory(t, docsCreateTestConfig(t, ""))
+	stub := registerDocsAIStub(reg, "POST", "/open-apis/docs_ai/v1/documents", map[string]interface{}{
+		"document": map[string]interface{}{
+			"document_id": "doxcn_new_doc",
+			"revision_id": float64(1),
+		},
+	})
+
+	err := runDocsCreateShortcut(t, f, stdout, []string{
+		"+create",
+		"--api-version", "v2",
+		"--content", `<title>demo</title><html5-block path="@widget.html"></html5-block>`,
+		"--as", "user",
+	})
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+
+	body := decodeRequestBody(t, stub.CapturedBody)
+	if got := body["content"].(string); !strings.Contains(got, `<html5-block data-ref="html5_1"></html5-block>`) {
+		t.Fatalf("content was not rewritten with data-ref: %s", got)
+	}
+	refMap := decodeHTML5ReferenceMap(t, body["reference_map"])
+	if got := refMap[html5BlockTag]["html5_1"].Data; got != "<html><body>hello</body></html>" {
+		t.Fatalf("reference_map html data = %q", got)
+	}
+	if _, ok := body["resources"]; ok {
+		t.Fatalf("request body must not use resources: %#v", body)
+	}
+}
+
+func findDocsTestFlag(flags []common.Flag, name string) common.Flag {
+	for _, flag := range flags {
+		if flag.Name == name {
+			return flag
+		}
+	}
+	return common.Flag{}
+}
+
+func hasDocsTestInput(flag common.Flag, input string) bool {
+	for _, item := range flag.Input {
+		if item == input {
+			return true
+		}
+	}
+	return false
+}
+
+func TestDocsUpdateV2HTML5BlockReferenceMapFromPath(t *testing.T) {
+	dir := t.TempDir()
+	cmdutil.TestChdir(t, dir)
+	if err := os.WriteFile("widget.html", []byte("<section>updated</section>"), 0o600); err != nil {
+		t.Fatalf("WriteFile() error: %v", err)
+	}
+
+	f, stdout, _, reg := cmdutil.TestFactory(t, docsTestConfigWithAppID("docs-html5-update"))
+	stub := registerDocsAIStub(reg, "PUT", "/open-apis/docs_ai/v1/documents/doxcn_doc", map[string]interface{}{
+		"document": map[string]interface{}{
+			"revision_id": float64(2),
+			"new_blocks": []interface{}{
+				map[string]interface{}{
+					"block_type":  "html5-block",
+					"block_id":    "blk_html5",
+					"block_token": "blk_html5",
+				},
+			},
+		},
+		"result": "success",
+	})
+
+	err := mountAndRunDocs(t, DocsUpdate, []string{
+		"+update",
+		"--api-version", "v2",
+		"--doc", "doxcn_doc",
+		"--command", "append",
+		"--content", `<html5-block path="@widget.html"></html5-block>`,
+		"--as", "user",
+	}, f, stdout)
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+
+	body := decodeRequestBody(t, stub.CapturedBody)
+	if got := body["content"].(string); got != `<html5-block data-ref="html5_1"></html5-block>` {
+		t.Fatalf("content = %q", got)
+	}
+	refMap := decodeHTML5ReferenceMap(t, body["reference_map"])
+	if got := refMap[html5BlockTag]["html5_1"].Data; got != "<section>updated</section>" {
+		t.Fatalf("reference_map html data = %q", got)
+	}
+
+	var envelope map[string]interface{}
+	if err := json.Unmarshal(stdout.Bytes(), &envelope); err != nil {
+		t.Fatalf("decode stdout: %v\n%s", err, stdout.String())
+	}
+	data, _ := envelope["data"].(map[string]interface{})
+	doc, _ := data["document"].(map[string]interface{})
+	if blocks, _ := doc["new_blocks"].([]interface{}); len(blocks) != 1 {
+		t.Fatalf("new_blocks not preserved in stdout: %#v", doc)
+	}
+}
+
+func TestDocsFetchV2HTML5BlockKeepsSmallReferenceMapInline(t *testing.T) {
+	dir := t.TempDir()
+	cmdutil.TestChdir(t, dir)
+
+	f, stdout, _, reg := cmdutil.TestFactory(t, docsTestConfigWithAppID("docs-html5-fetch"))
+	registerDocsAIStub(reg, "POST", "/open-apis/docs_ai/v1/documents/doxcn_fetch/fetch", map[string]interface{}{
+		"document": map[string]interface{}{
+			"document_id": "doxcn_fetch",
+			"revision_id": float64(3),
+			"content":     `<docx><html5-block data-ref="html5_1"></html5-block></docx>`,
+			"reference_map": map[string]interface{}{
+				"html5-block": map[string]interface{}{
+					"html5_1": map[string]interface{}{"data": "<html><main>fetched</main></html>"},
+				},
+			},
+		},
+		"tips": "must_read_html_code",
+	})
+
+	err := mountAndRunDocs(t, DocsFetch, []string{
+		"+fetch",
+		"--api-version", "v2",
+		"--doc", "doxcn_fetch",
+		"--format", "json",
+		"--as", "user",
+	}, f, stdout)
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+
+	written := filepath.Join(dir, html5BlockReferenceRoot, "doxcn_fetch", "html5_1.html")
+	if _, err := os.Stat(written); err == nil {
+		t.Fatalf("small html should stay inline, got file %s", written)
+	}
+
+	var envelope map[string]interface{}
+	if err := json.Unmarshal(stdout.Bytes(), &envelope); err != nil {
+		t.Fatalf("decode stdout: %v\n%s", err, stdout.String())
+	}
+	data, _ := envelope["data"].(map[string]interface{})
+	doc, _ := data["document"].(map[string]interface{})
+	if got := doc["content"].(string); !strings.Contains(got, `<html5-block data-ref="html5_1"></html5-block>`) {
+		t.Fatalf("content should keep data-ref: %s", got)
+	}
+	refMap := decodeHTML5ReferenceMap(t, doc["reference_map"])
+	if got := refMap[html5BlockTag]["html5_1"].Data; got != "<html><main>fetched</main></html>" {
+		t.Fatalf("reference_map html data = %q", got)
+	}
+	if _, ok := doc["resources"]; ok {
+		t.Fatalf("fetch output must not use resources: %#v", doc)
+	}
+	if _, ok := data["suggestions"]; ok {
+		t.Fatalf("CLI must not add suggestions; service tips is enough: %#v", data["suggestions"])
+	}
+	if got := data["tips"]; got != "must_read_html_code" {
+		t.Fatalf("tips should be preserved from service response, got %#v", got)
+	}
+}
+
+func TestDocsFetchV2HTML5BlockLargeReferenceMapUsesPath(t *testing.T) {
+	dir := t.TempDir()
+	cmdutil.TestChdir(t, dir)
+
+	largeHTML := "<html><main>" + strings.Repeat("x", html5BlockReferenceMaxRaw+1) + "</main></html>"
+	f, stdout, _, reg := cmdutil.TestFactory(t, docsTestConfigWithAppID("docs-html5-fetch-large"))
+	registerDocsAIStub(reg, "POST", "/open-apis/docs_ai/v1/documents/doxcn_fetch/fetch", map[string]interface{}{
+		"document": map[string]interface{}{
+			"document_id": "doxcn_fetch",
+			"revision_id": float64(3),
+			"content":     `<docx><html5-block data-ref="html5_1"></html5-block></docx>`,
+			"reference_map": map[string]interface{}{
+				"html5-block": map[string]interface{}{
+					"html5_1": map[string]interface{}{"data": largeHTML},
+				},
+			},
+		},
+	})
+
+	err := mountAndRunDocs(t, DocsFetch, []string{
+		"+fetch",
+		"--api-version", "v2",
+		"--doc", "doxcn_fetch",
+		"--format", "json",
+		"--as", "user",
+	}, f, stdout)
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+
+	written := filepath.Join(dir, html5BlockReferenceRoot, "doxcn_fetch", "html5_1.html")
+	raw, err := os.ReadFile(written)
+	if err != nil {
+		t.Fatalf("ReadFile(%s) error: %v", written, err)
+	}
+	if string(raw) != largeHTML {
+		t.Fatalf("materialized html = %q", raw)
+	}
+
+	var envelope map[string]interface{}
+	if err := json.Unmarshal(stdout.Bytes(), &envelope); err != nil {
+		t.Fatalf("decode stdout: %v\n%s", err, stdout.String())
+	}
+	data, _ := envelope["data"].(map[string]interface{})
+	doc, _ := data["document"].(map[string]interface{})
+	if got := doc["content"].(string); strings.Contains(got, `path="@`) || !strings.Contains(got, `data-ref="html5_1"`) {
+		t.Fatalf("content should keep data-ref and not path: %s", got)
+	}
+	refMap := decodeHTML5ReferenceMap(t, doc["reference_map"])
+	entry := refMap[html5BlockTag]["html5_1"]
+	if entry.Data != "" || entry.Path != "@doc-fetch-resources/doxcn_fetch/html5_1.html" {
+		t.Fatalf("large html should be represented as path, got %#v", entry)
+	}
+}
+
+func TestDocsCreateV2HTML5BlockReferenceMapAdvancedInput(t *testing.T) {
+	f, stdout, _, reg := cmdutil.TestFactory(t, docsCreateTestConfig(t, ""))
+	stub := registerDocsAIStub(reg, "POST", "/open-apis/docs_ai/v1/documents", map[string]interface{}{
+		"document": map[string]interface{}{
+			"document_id": "doxcn_new_doc",
+			"revision_id": float64(1),
+		},
+	})
+
+	err := runDocsCreateShortcut(t, f, stdout, []string{
+		"+create",
+		"--api-version", "v2",
+		"--content", `<html5-block data-ref="html5_1"></html5-block>`,
+		"--reference-map", `{"html5-block":{"html5_1":{"data":"<html></html>"}}}`,
+		"--as", "user",
+	})
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	body := decodeRequestBody(t, stub.CapturedBody)
+	if got := body["content"].(string); got != `<html5-block data-ref="html5_1"></html5-block>` {
+		t.Fatalf("content = %q", got)
+	}
+	refMap := decodeHTML5ReferenceMap(t, body["reference_map"])
+	if got := refMap[html5BlockTag]["html5_1"].Data; got != "<html></html>" {
+		t.Fatalf("reference_map html data = %q", got)
+	}
+}
+
+func TestDocsCreateV2HTML5BlockReferenceMapFromFile(t *testing.T) {
+	dir := t.TempDir()
+	cmdutil.TestChdir(t, dir)
+	if err := os.WriteFile("reference-map.json", []byte(`{"html5-block":{"html5_1":{"data":"<html>from file</html>"}}}`), 0o600); err != nil {
+		t.Fatalf("WriteFile(reference-map.json) error: %v", err)
+	}
+
+	f, stdout, _, reg := cmdutil.TestFactory(t, docsCreateTestConfig(t, ""))
+	stub := registerDocsAIStub(reg, "POST", "/open-apis/docs_ai/v1/documents", map[string]interface{}{
+		"document": map[string]interface{}{
+			"document_id": "doxcn_new_doc",
+			"revision_id": float64(1),
+		},
+	})
+
+	err := runDocsCreateShortcut(t, f, stdout, []string{
+		"+create",
+		"--api-version", "v2",
+		"--content", `<html5-block data-ref="html5_1"></html5-block>`,
+		"--reference-map", "@reference-map.json",
+		"--as", "user",
+	})
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	body := decodeRequestBody(t, stub.CapturedBody)
+	refMap := decodeHTML5ReferenceMap(t, body["reference_map"])
+	if got := refMap[html5BlockTag]["html5_1"].Data; got != "<html>from file</html>" {
+		t.Fatalf("reference_map html data = %q", got)
+	}
+}
+
+func TestDocsCreateV2HTML5BlockRejectsMissingReferenceMap(t *testing.T) {
+	f, stdout, _, _ := cmdutil.TestFactory(t, docsCreateTestConfig(t, ""))
+
+	err := runDocsCreateShortcut(t, f, stdout, []string{
+		"+create",
+		"--api-version", "v2",
+		"--content", `<html5-block data-ref="html5_1"></html5-block>`,
+		"--as", "user",
+	})
+	if err == nil || !strings.Contains(err.Error(), `reference_map.html5-block.html5_1 is required`) {
+		t.Fatalf("expected missing reference_map error, got: %v", err)
+	}
+}
+
+func TestDocsCreateV2HTML5BlockRejectsInternalDataAttr(t *testing.T) {
+	f, stdout, _, _ := cmdutil.TestFactory(t, docsCreateTestConfig(t, ""))
+
+	err := runDocsCreateShortcut(t, f, stdout, []string{
+		"+create",
+		"--api-version", "v2",
+		"--content", `<html5-block data="PGh0bWw+PC9odG1sPg=="></html5-block>`,
+		"--as", "user",
+	})
+	if err == nil || !strings.Contains(err.Error(), `html5-block data is reserved for SDK internals`) {
+		t.Fatalf("expected internal data attr error, got: %v", err)
+	}
+}
+
+func TestDocsCreateV2HTML5BlockPathReadFailure(t *testing.T) {
+	dir := t.TempDir()
+	cmdutil.TestChdir(t, dir)
+	f, stdout, _, _ := cmdutil.TestFactory(t, docsCreateTestConfig(t, ""))
+
+	err := runDocsCreateShortcut(t, f, stdout, []string{
+		"+create",
+		"--api-version", "v2",
+		"--content", `<html5-block path="@missing.html"></html5-block>`,
+		"--as", "user",
+	})
+	if err == nil || !strings.Contains(err.Error(), `html5-block path "missing.html" cannot be read from the current working directory`) {
+		t.Fatalf("expected path read error, got: %v", err)
+	}
+}
+
+func TestDocsCreateV2HTML5BlockRejectsInlineContent(t *testing.T) {
+	dir := t.TempDir()
+	cmdutil.TestChdir(t, dir)
+	if err := os.WriteFile("widget.html", []byte("<section>from file</section>"), 0o600); err != nil {
+		t.Fatalf("WriteFile() error: %v", err)
+	}
+
+	f, stdout, _, _ := cmdutil.TestFactory(t, docsCreateTestConfig(t, ""))
+	err := runDocsCreateShortcut(t, f, stdout, []string{
+		"+create",
+		"--api-version", "v2",
+		"--content", `<html5-block path="@widget.html"><section>inline</section></html5-block>`,
+		"--as", "user",
+	})
+	if err == nil || !strings.Contains(err.Error(), `html5-block content must be loaded from path="@relative.html"`) {
+		t.Fatalf("expected inline content error, got: %v", err)
+	}
+}
+
+func TestDocsFetchV2MissingHTML5BlockReferenceFails(t *testing.T) {
+	dir := t.TempDir()
+	cmdutil.TestChdir(t, dir)
+
+	f, stdout, _, reg := cmdutil.TestFactory(t, docsTestConfigWithAppID("docs-html5-fetch-missing"))
+	registerDocsAIStub(reg, "POST", "/open-apis/docs_ai/v1/documents/doxcn_fetch/fetch", map[string]interface{}{
+		"document": map[string]interface{}{
+			"document_id": "doxcn_fetch",
+			"revision_id": float64(3),
+			"content":     `<docx><html5-block data-ref="html5_missing"></html5-block></docx>`,
+			"reference_map": map[string]interface{}{
+				"html5-block": map[string]interface{}{
+					"html5_1": map[string]interface{}{"data": "<html></html>"},
+				},
+			},
+		},
+	})
+
+	err := mountAndRunDocs(t, DocsFetch, []string{
+		"+fetch",
+		"--api-version", "v2",
+		"--doc", "doxcn_fetch",
+		"--format", "json",
+		"--as", "user",
+	}, f, stdout)
+	if err == nil || !strings.Contains(err.Error(), "Re-run fetch or check that the upstream document.reference_map field includes this ref") {
+		t.Fatalf("expected missing reference_map error, got: %v", err)
+	}
+}
+
+func TestHTML5BlockMarkdownCodeFenceIsIgnored(t *testing.T) {
+	for _, fence := range []string{"```", "~~~"} {
+		t.Run(fence, func(t *testing.T) {
+			content := fence + "xml\n<html5-block data-ref=\"html5_1\"></html5-block>\n" + fence + "\n"
+			if hasProcessableHTML5Block("markdown", content) {
+				t.Fatalf("html5-block inside markdown code fence should be ignored")
+			}
+		})
+	}
+}
+
+func TestWriteHTML5BlockReferenceFileRejectsDotNames(t *testing.T) {
+	runtime := newFetchShortcutTestRuntime(t, "", nil)
+	tests := []struct {
+		name     string
+		docToken string
+		ref      string
+		want     string
+	}{
+		{name: "dot doc token", docToken: ".", ref: "html5_1", want: "document_id"},
+		{name: "dotdot doc token", docToken: "..", ref: "html5_1", want: "document_id"},
+		{name: "dot ref", docToken: "doxcn_fetch", ref: ".", want: "data-ref"},
+		{name: "dotdot ref", docToken: "doxcn_fetch", ref: "..", want: "data-ref"},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			_, err := writeHTML5BlockReferenceFile(runtime, tt.docToken, tt.ref, "<html></html>")
+			if err == nil || !strings.Contains(err.Error(), tt.want) {
+				t.Fatalf("writeHTML5BlockReferenceFile() error = %v, want %q", err, tt.want)
+			}
+		})
+	}
+}
+
+func TestPrepareHTML5BlockWriteContentMarkdownRaw(t *testing.T) {
+	dir := t.TempDir()
+	cmdutil.TestChdir(t, dir)
+	if err := os.WriteFile("widget.html", []byte("<html><body>markdown</body></html>"), 0o600); err != nil {
+		t.Fatalf("WriteFile() error: %v", err)
+	}
+
+	f, stdout, _, reg := cmdutil.TestFactory(t, docsCreateTestConfig(t, ""))
+	stub := registerDocsAIStub(reg, "POST", "/open-apis/docs_ai/v1/documents", map[string]interface{}{
+		"document": map[string]interface{}{
+			"document_id": "doxcn_new_doc",
+			"revision_id": float64(1),
+		},
+	})
+
+	err := runDocsCreateShortcut(t, f, stdout, []string{
+		"+create",
+		"--api-version", "v2",
+		"--doc-format", "markdown",
+		"--content", "before\n<html5-block path=\"@widget.html\"></html5-block>\nafter",
+		"--as", "user",
+	})
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+
+	body := decodeRequestBody(t, stub.CapturedBody)
+	if got := body["content"].(string); !strings.Contains(got, `<html5-block data-ref="html5_1"></html5-block>`) {
+		t.Fatalf("content was not rewritten: %s", got)
+	}
+	refMap := decodeHTML5ReferenceMap(t, body["reference_map"])
+	if got := refMap[html5BlockTag]["html5_1"].Data; got != "<html><body>markdown</body></html>" {
+		t.Fatalf("reference_map html data = %q", got)
+	}
+}
+
+func registerDocsAIStub(reg *httpmock.Registry, method string, url string, data map[string]interface{}) *httpmock.Stub {
+	stub := &httpmock.Stub{
+		Method: method,
+		URL:    url,
+		Body: map[string]interface{}{
+			"code": 0,
+			"msg":  "ok",
+			"data": data,
+		},
+	}
+	reg.Register(stub)
+	return stub
+}
+
+func decodeRequestBody(t *testing.T, raw []byte) map[string]interface{} {
+	t.Helper()
+	var body map[string]interface{}
+	if err := json.Unmarshal(bytes.TrimSpace(raw), &body); err != nil {
+		t.Fatalf("decode request body: %v\n%s", err, raw)
+	}
+	return body
+}
+
+func decodeHTML5ReferenceMap(t *testing.T, raw interface{}) html5BlockReferenceMap {
+	t.Helper()
+	data, err := json.Marshal(raw)
+	if err != nil {
+		t.Fatalf("marshal reference_map: %v\n%#v", err, raw)
+	}
+	var refMap html5BlockReferenceMap
+	if err := json.Unmarshal(data, &refMap); err != nil {
+		t.Fatalf("decode reference_map: %v\n%s", err, data)
+	}
+	return refMap
+}
diff --git a/skills/lark-doc/references/lark-doc-create.md b/skills/lark-doc/references/lark-doc-create.md
index 17fa6bc2a..ce2860136 100644
--- a/skills/lark-doc/references/lark-doc-create.md
+++ b/skills/lark-doc/references/lark-doc-create.md
@@ -60,6 +60,7 @@ lark-cli docs +create --doc-format markdown --title "项目计划" --content $'#
 | ------------------- | -- |---------------------------------------------|
 | `--title`           | 否  | 文档标题，Markdown 导入时使用；XML 创建推荐在 `--content` 开头写 `<title>...</title>`；多个标题仅保留第一个并在 `warnings` / `degrade_details` 提示 |
 | `--content`         | 视情况 | 文档内容（XML 或 Markdown 格式）；不传 `--content` 时必须传 `--title` |
+| `--reference-map` | 否 | 结构化 `reference_map` JSON object；必须与 `--content` 一起使用。普通写入优先把结构写在正文里；该参数主要用于保留或回放已有 `document.reference_map`。支持直接 JSON、`@reference-map.json`（相对路径）或 `-` 从 stdin 读取。 |
 | `--doc-format`      | 否  | 内容格式：`xml`（默认，始终优先使用）\| `markdown`（仅用户明确要求时） |
 | `--parent-token`    | 否  | 父文件夹或知识库节点 token（与 `--parent-position` 互斥）  |
 | `--parent-position` | 否  | 父节点位置，如 `my_library`（与 `--parent-token` 互斥） |
diff --git a/skills/lark-doc/references/lark-doc-update.md b/skills/lark-doc/references/lark-doc-update.md
index 918408fa6..43beb7f56 100644
--- a/skills/lark-doc/references/lark-doc-update.md
+++ b/skills/lark-doc/references/lark-doc-update.md
@@ -24,7 +24,7 @@
 | `--command` | 是 | 操作指令（见下方指令速查表） |
 | `--doc-format` | 否 | 内容格式：`xml`（默认，始终优先使用）\| `markdown`（仅用户明确要求时） |
 | `--content` | 视指令 | 写入内容（`str_replace` 传空字符串可实现删除） |
-| `--reference-map` | 否 | 结构化 `reference_map` JSON object；当 `--content` 使用正文外部载荷 / 引用映射时与内容一起传给服务，支持直接 JSON、`@reference-map.json`（相对路径）或 `-` 从 stdin 读取。通常用于回写已有 `document.reference_map`。 |
+| `--reference-map` | 否 | 结构化 `reference_map` JSON object；必须与 `--content` 一起使用。普通写入优先把结构写在正文里；该参数主要用于保留或回放已有 `document.reference_map`。支持直接 JSON、`@reference-map.json`（相对路径）或 `-` 从 stdin 读取。 |
 | `--pattern` | 视指令 | 匹配文本（str_replace） |
 | `--block-id` | 视指令 | 目标 block ID（block_* 操作），逗号分隔可批量删除，-1 表示末尾 |
 | `--src-block-ids` | 视指令 | 源 block ID（逗号分隔），用于 block_copy_insert_after / block_move_after |
diff --git a/tests/cli_e2e/docs/docs_update_dryrun_test.go b/tests/cli_e2e/docs/docs_update_dryrun_test.go
index 7f47490e0..23dbd1db7 100644
--- a/tests/cli_e2e/docs/docs_update_dryrun_test.go
+++ b/tests/cli_e2e/docs/docs_update_dryrun_test.go
@@ -57,7 +57,7 @@ func TestDocs_DryRunDefaultsToV2OpenAPI(t *testing.T) {
 				"--dry-run",
 			},
 			wantURL:        "/open-apis/docs_ai/v1/documents/doxcnDryRunE2E/fetch",
-			wantExtraParam: `{"enable_user_cite_reference_map":true}`,
+			wantExtraParam: `{"enable_user_cite_reference_map":true,"return_html5_block_data":true}`,
 		},
 		{
 			name: "update",