diff --git a/frontend/src/components/canvas/ProcessCanvas/index.vue b/frontend/src/components/canvas/ProcessCanvas/index.vue
index e0df1583f..e89a125b1 100644
--- a/frontend/src/components/canvas/ProcessCanvas/index.vue
+++ b/frontend/src/components/canvas/ProcessCanvas/index.vue
@@ -1589,6 +1589,26 @@
             const parent = node.getParent();
             const parentId = parent ? parent.id : undefined;
             const isGroupInner = !!parentId;
+            // 先获取并处理连线，避免 removeNode 后 getConnectedEdges 取不到（与循环容器分支同理）
+            const connectedEdgesBeforeRemove = this.graph.getConnectedEdges(node);
+            connectedEdgesBeforeRemove.forEach((edge) => {
+              const edgeId = edge.id;
+              const source = edge.getSource();
+              const target = edge.getTarget();
+              const isInnerLine = parentId && this.activities[parentId]?.type === 'SubCanvas';
+              if (isInnerLine) {
+                // 分组子节点的连线：从内嵌pipeline中删除
+                this.deleteInnerLine(edgeId, parentId);
+              } else {
+                // 外层节点的连线：从外层store中删除
+                this.onLineChange('delete', {
+                  id: edgeId,
+                  source: { cell: source.cell },
+                  target: { cell: target.cell },
+                });
+              }
+              this.graph.removeEdge(edgeId);
+            });
             if (parentId && isGroupInner) {
               this.removeFromPipelineTree(node.id, parentId);
             }
@@ -1602,27 +1622,6 @@
           const nodeInstance = this.getNodeInstance(node.id);
           this.graph.select(nodeInstance);
         }
-        // 删除节点两端旧的连线-获取节点在画布上的实际连线（包括分组子节点的内嵌连线）
-        const connectedEdges = this.graph.getConnectedEdges(node.id);
-        connectedEdges.forEach((edge) => {
-          const edgeId = edge.id;
-          const source = edge.getSource();
-          const target = edge.getTarget();
-          const parentNode = node.getParent();
-          const isInnerLine = parentNode && this.activities[parentNode.id]?.type === 'SubCanvas';
-          if (isInnerLine) {
-            // 分组子节点的连线：从内嵌pipeline中删除
-            this.deleteInnerLine(edgeId, parentNode.id);
-          } else {
-            // 外层节点的连线：从外层store中删除
-            this.onLineChange('delete', {
-              id: edgeId,
-              source: { cell: source.cell },
-              target: { cell: target.cell },
-            });
-          }
-          this.graph.removeEdge(edgeId);
-        });
         // 被删除的节点只存在一条输入连线和输出连线时才允许自动连线
         const { incoming = [], outgoing } = nodeConfig;
         if (
diff --git a/frontend/src/utils/validatePipeline.js b/frontend/src/utils/validatePipeline.js
index e438e0637..f64d225bc 100644
--- a/frontend/src/utils/validatePipeline.js
+++ b/frontend/src/utils/validatePipeline.js
@@ -469,6 +469,7 @@ const validatePipeline = {
     let message;
     let tasknode = 0;
     let subflow = 0;
+    let subcanvas = 0;
     const errorId = [];
     const isLineNumValid = data.locations.every((loc) => {
       const rule = NODE_RULE[loc.type];
@@ -479,6 +480,8 @@ const validatePipeline = {
         tasknode += 1;
       } else if (loc.type === 'subflow') {
         subflow += 1;
+      } else if (loc.type === 'SubCanvas') {
+        subcanvas += 1;
       }
       data.lines.forEach((line) => {
         if (line.source.id === loc.id) {
@@ -508,7 +511,7 @@ const validatePipeline = {
       return this.getMessage(false, message, errorId);
     }
 
-    if ((tasknode + subflow) === 0) {
+    if ((tasknode + subflow + subcanvas) === 0) {
       message = i18n.t('请添加任务节点');
       return this.getMessage(false, message);
     }
diff --git a/frontend/src/views/template/TemplateEdit/index.vue b/frontend/src/views/template/TemplateEdit/index.vue
index 75d558741..6da6021cd 100644
--- a/frontend/src/views/template/TemplateEdit/index.vue
+++ b/frontend/src/views/template/TemplateEdit/index.vue
@@ -693,7 +693,7 @@
           ? this.subprocess_info
           : this.constructedSubprocessInfo;
         if (!subprocessInfo) return;
-        subprocessInfo.forEach(item => {
+        subprocessInfo.forEach((item) => {
           processCanvas.onUpdateNodeInfo(item.subprocess_node_id, { hasUpdated: item.expired });
         });
       },
@@ -2165,7 +2165,7 @@
         });
       },
       // 点击保存模板按钮回调
-      onSaveTemplate(saveAndCreate, pid) {
+      async onSaveTemplate(saveAndCreate, pid) {
         if (this.templateSaving || this.createTaskSaving) {
           return;
         }
@@ -2179,7 +2179,11 @@
             this.isExecuteSchemeDialog = true;
           }
         } else {
-          this.checkNodeAndSaveTemplate();
+          try {
+            await this.checkNodeAndSaveTemplate();
+          } catch (error) {
+            console.warn(error);
+          }
         }
       },
       // 校验节点配置
@@ -2204,8 +2208,10 @@
             ellipsisCopy: true,
             delay: 10000,
           });
-          return;
+          throw new Error(overlapResult.message);
         }
+        // 清空因重叠失败记录的节点,避免status 残留
+        this.validateConnectFailList = [];
         const validateMessage = validatePipeline.isNodeLineNumValid(canvasData);
         if (!validateMessage.result) {
           // 获取检验不合格节点
@@ -2228,7 +2234,7 @@
             ellipsisCopy: true,
             delay: 10000,
           });
-          return;
+          throw new Error(validateMessage.message);
         }
         // 节点配置是否错误
         const nodeWithErrors = document.querySelectorAll('.canvas-node-item .failed');
@@ -2246,22 +2252,23 @@
             ellipsisCopy: true,
             delay: 10000,
           });
-          return;
+          throw new Error(message);
         }
         const isAllNodeValid = this.validateAtomNode();
-        if (isAllNodeValid) {
-          if (this.common && this.saveAndCreate && this.pid === undefined) { // 公共流程保存并创建任务，没有选择项目
-            this.$refs.templateHeader.setProjectSelectDialogShow();
-          } else {
-            if (this.isExecuteScheme) {
-              if (this.type === 'clone' || this.isTemplateDataChanged) {
-                this.isExecuteSchemeDialog = true;
-              } else {
-                this.isEditProcessPage = false;
-              }
+        if (!isAllNodeValid) {
+          throw new Error('validateAtomNode failed');
+        }
+        if (this.common && this.saveAndCreate && this.pid === undefined) { // 公共流程保存并创建任务，没有选择项目
+          this.$refs.templateHeader.setProjectSelectDialogShow();
+        } else {
+          if (this.isExecuteScheme) {
+            if (this.type === 'clone' || this.isTemplateDataChanged) {
+              this.isExecuteSchemeDialog = true;
             } else {
-              await this.saveTemplate();
+              this.isEditProcessPage = false;
             }
+          } else {
+            await this.saveTemplate();
           }
         }
       },
@@ -2585,9 +2592,13 @@
         }
       },
       // 多 tab 打开同一流程模板
-      onMultipleTabConfirm() {
-        this.checkNodeAndSaveTemplate();
-        this.multipleTabDialogShow = false;
+      async onMultipleTabConfirm() {
+        try {
+          await this.checkNodeAndSaveTemplate();
+          this.multipleTabDialogShow = false;
+        } catch (error) {
+          console.warn(error);
+        }
       },
       getTplTabData() {
         return {