diff --git a/weixin/mp.py b/weixin/mp.py
index 08bf636..3fce89a 100644
--- a/weixin/mp.py
+++ b/weixin/mp.py
@@ -98,8 +98,8 @@ def post(self, path, data, prefix="/cgi-bin", json_encode=True, token=True):
         token and params.setdefault("access_token", self.access_token)
         headers = {}
         if json_encode:
-            # data = json.dumps(data, ensure_ascii=False)
-            data = json.dumps(data)
+            # data = json.dumps(data, ensure_ascii=False).encode('utf-8')
+#             data = json.dumps(data)
             headers["Content-Type"] = "application/json;charset=UTF-8"
         # print url, params, headers, data
         return self.fetch("POST", url, params=params, data=data, headers=headers)