diff --git a/src/locales/en-US.json b/src/locales/en-US.json
index f248c0fef..a4f2f231a 100644
--- a/src/locales/en-US.json
+++ b/src/locales/en-US.json
@@ -259,23 +259,23 @@
   "SHENYU.DIC.INPUTNAME": "DictionaryName",
   "SHENYU.PERMISSION.EMPTY":
     "The role of the login user is not configured with menu permissions",
-  "SHENYU.BUTTON.PLUGIN.RULE.ADD": "addRule",
-  "SHENYU.BUTTON.PLUGIN.RULE.DELETE": "deleteRule",
-  "SHENYU.BUTTON.PLUGIN.RULE.EDIT": "editRule",
-  "SHENYU.BUTTON.PLUGIN.RULE.QUERY": "queryRule",
-  "SHENYU.BUTTON.PLUGIN.SELECTOR.ADD": "addSelector",
-  "SHENYU.BUTTON.PLUGIN.SELECTOR.DELETE": "deleteSelector",
-  "SHENYU.BUTTON.PLUGIN.SELECTOR.EDIT": "editSelector",
-  "SHENYU.BUTTON.PLUGIN.SELECTOR.QUERY": "querySelector",
-  "SHENYU.BUTTON.PLUGIN.SYNCHRONIZE": "synchronizeData",
-  "SHENYU.BUTTON.SYSTEM.ADD": "add",
-  "SHENYU.BUTTON.SYSTEM.LIST": "query",
-  "SHENYU.BUTTON.SYSTEM.DELETE": "delete",
-  "SHENYU.BUTTON.SYSTEM.EDIT": "modify",
-  "SHENYU.BUTTON.SYSTEM.SYNCHRONIZE": "synchronize",
-  "SHENYU.BUTTON.SYSTEM.ENABLE": "enable",
-  "SHENYU.BUTTON.SYSTEM.EDITRESOURCEDETAILS": "editDetails",
-  "SHENYU.BUTTON.SYSTEM.RESOURCE": "resource",
+  "SHENYU.BUTTON.PLUGIN.RULE.ADD": "AddRule",
+  "SHENYU.BUTTON.PLUGIN.RULE.DELETE": "DeleteRule",
+  "SHENYU.BUTTON.PLUGIN.RULE.EDIT": "EditRule",
+  "SHENYU.BUTTON.PLUGIN.RULE.QUERY": "QueryRule",
+  "SHENYU.BUTTON.PLUGIN.SELECTOR.ADD": "AddSelector",
+  "SHENYU.BUTTON.PLUGIN.SELECTOR.DELETE": "DeleteSelector",
+  "SHENYU.BUTTON.PLUGIN.SELECTOR.EDIT": "EditSelector",
+  "SHENYU.BUTTON.PLUGIN.SELECTOR.QUERY": "QuerySelector",
+  "SHENYU.BUTTON.PLUGIN.SYNCHRONIZE": "SynchronizeData",
+  "SHENYU.BUTTON.SYSTEM.ADD": "Add",
+  "SHENYU.BUTTON.SYSTEM.LIST": "Query",
+  "SHENYU.BUTTON.SYSTEM.DELETE": "Delete",
+  "SHENYU.BUTTON.SYSTEM.EDIT": "Modify",
+  "SHENYU.BUTTON.SYSTEM.SYNCHRONIZE": "Synchronize",
+  "SHENYU.BUTTON.SYSTEM.ENABLE": "Enable",
+  "SHENYU.BUTTON.SYSTEM.EDITRESOURCEDETAILS": "EditDetails",
+  "SHENYU.BUTTON.SYSTEM.RESOURCE": "Resource",
   "SHENYU.BUTTON.DATA.PERMISSION.CONFIG": "ConfigureDataPermission",
   "SHENYU.MESSAGE.SESSION.INVALID": "Session is invalid",
   "SHENYU.MESSAGE.SESSION.RELOGIN": "Please login in again",
@@ -319,23 +319,24 @@
   "SHENYU.DOCUMENT.APIDOC.CONTENTS.TO.BE.SIGNED": "Contents To Be Signed",
   "SHENYU.DOCUMENT.APIDOC.SIGNATURE": "Signature",
   "SHENYU.DOCUMENT.APIDOC.ERROR.CODE.DETAILS": "Error Code Details",
-  "SHENYU.DOCUMENT.APIDOC.CONTEXTPATH": "contextPath",
-  "SHENYU.DOCUMENT.APIDOC.APIPATH": "apiPath",
-  "SHENYU.DOCUMENT.APIDOC.HTTPMETHOD": "httpMethod",
-  "SHENYU.DOCUMENT.APIDOC.CONSUME": "consume",
-  "SHENYU.DOCUMENT.APIDOC.PRODUCE": "produce",
-  "SHENYU.DOCUMENT.APIDOC.VERSION": "version",
-  "SHENYU.DOCUMENT.APIDOC.RPCTYPE": "rpcType",
-  "SHENYU.DOCUMENT.APIDOC.STATE": "state",
-  "SHENYU.DOCUMENT.APIDOC.EXT": "ext",
-  "SHENYU.DOCUMENT.APIDOC.APIOWNER": "apiOwner",
-  "SHENYU.DOCUMENT.APIDOC.APIDESC": "apiDesc",
-  "SHENYU.DOCUMENT.APIDOC.APISOURCE": "apiSource",
-  "SHENYU.DOCUMENT.APIDOC.DOCUMENT": "document",
-  "SHENYU.DOCUMENT.TAG.NAME": "name",
-  "SHENYU.DOCUMENT.TAG.DESC": "tagDesc",
-  "SHENYU.DOCUMENT.TAG.PARENT.ID": "parentTagId",
-  "SHENYU.DOCUMENT.TAG.ext": "ext",
+  "SHENYU.DOCUMENT.APIDOC.CONTEXTPATH": "Context Path",
+  "SHENYU.DOCUMENT.APIDOC.APIPATH": "Api Path",
+  "SHENYU.DOCUMENT.APIDOC.HTTPMETHOD": "Http Method",
+  "SHENYU.DOCUMENT.APIDOC.CONSUME": "Consume",
+  "SHENYU.DOCUMENT.APIDOC.PRODUCE": "Produce",
+  "SHENYU.DOCUMENT.APIDOC.VERSION": "Version",
+  "SHENYU.DOCUMENT.APIDOC.RPCTYPE": "Rpc Type",
+  "SHENYU.DOCUMENT.APIDOC.STATE": "State",
+  "SHENYU.DOCUMENT.APIDOC.EXT": "Extent Param",
+  "SHENYU.DOCUMENT.APIDOC.EXT.INFO": "Extend param content need json format",
+  "SHENYU.DOCUMENT.APIDOC.APIOWNER": "Api Owner",
+  "SHENYU.DOCUMENT.APIDOC.APIDESC": "Api Desc",
+  "SHENYU.DOCUMENT.APIDOC.APISOURCE": "Api Source",
+  "SHENYU.DOCUMENT.APIDOC.DOCUMENT": "Document",
+  "SHENYU.DOCUMENT.TAG.NAME": "Tag Name",
+  "SHENYU.DOCUMENT.TAG.DESC": "Tag Desc",
+  "SHENYU.DOCUMENT.TAG.PARENT.ID": "ParentTagId",
+  "SHENYU.DOCUMENT.TAG.ext": "Ext",
   "SHENYU.COMMON.REQUIRED": "Required",
   "SHENYU.COMMON.MAX.LENGTH": "Max Length",
   "SHENYU.COMMON.MAX.EXAMPLE": "Example",
diff --git a/src/locales/zh-CN.json b/src/locales/zh-CN.json
index 798a6f352..c8a69f1f5 100644
--- a/src/locales/zh-CN.json
+++ b/src/locales/zh-CN.json
@@ -307,17 +307,18 @@
   "SHENYU.DOCUMENT.APIDOC.SIGNATURE": "签名(sign)",
   "SHENYU.DOCUMENT.APIDOC.ERROR.CODE.DETAILS": "错误代码",
   "SHENYU.DOCUMENT.APIDOC.CONTEXTPATH": "上下文路径",
-  "SHENYU.DOCUMENT.APIDOC.APIPATH": "api路径",
-  "SHENYU.DOCUMENT.APIDOC.HTTPMETHOD": "http方法",
+  "SHENYU.DOCUMENT.APIDOC.APIPATH": "Api路径",
+  "SHENYU.DOCUMENT.APIDOC.HTTPMETHOD": "Http方法",
   "SHENYU.DOCUMENT.APIDOC.CONSUME": "消费",
   "SHENYU.DOCUMENT.APIDOC.PRODUCE": "生产",
   "SHENYU.DOCUMENT.APIDOC.VERSION": "版本",
-  "SHENYU.DOCUMENT.APIDOC.RPCTYPE": "rpc类型",
+  "SHENYU.DOCUMENT.APIDOC.RPCTYPE": "Rpc类型",
   "SHENYU.DOCUMENT.APIDOC.STATE": "状态",
-  "SHENYU.DOCUMENT.APIDOC.EXT": "ext",
-  "SHENYU.DOCUMENT.APIDOC.APIOWNER": "api持有者",
-  "SHENYU.DOCUMENT.APIDOC.APIDESC": "api描述",
-  "SHENYU.DOCUMENT.APIDOC.APISOURCE": "api来源",
+  "SHENYU.DOCUMENT.APIDOC.EXT": "扩展参数",
+  "SHENYU.DOCUMENT.APIDOC.EXT.INFO": "扩展参数需要为JSON格式",
+  "SHENYU.DOCUMENT.APIDOC.APIOWNER": "Api持有者",
+  "SHENYU.DOCUMENT.APIDOC.APIDESC": "Api描述",
+  "SHENYU.DOCUMENT.APIDOC.APISOURCE": "Api来源",
   "SHENYU.DOCUMENT.APIDOC.DOCUMENT": "文档说明",
   "SHENYU.DOCUMENT.TAG.NAME": "标签名称",
   "SHENYU.DOCUMENT.TAG.DESC": "标签描述",
diff --git a/src/routes/Document/components/AddAndUpdateApiDoc.js b/src/routes/Document/components/AddAndUpdateApiDoc.js
index 06083b7be..ffca196b0 100644
--- a/src/routes/Document/components/AddAndUpdateApiDoc.js
+++ b/src/routes/Document/components/AddAndUpdateApiDoc.js
@@ -62,15 +62,29 @@ class AddAndUpdateApiDoc extends Component {
     formLoaded?.(form);
   }
 
+
   handleSubmit = () => {
     const { form, onOk } = this.props;
     form.validateFieldsAndScroll(async (err, values) => {
+      function isJsonStr(str) {
+        try {
+          let obj = JSON.parse(str);
+          return !!(typeof obj === 'object' && obj);
+        } catch(e) {
+          return false;
+        }
+      }
       if (!err) {
         const { id } = values;
         let res = {};
         values.state = parseInt(values.state);
         values.apiSource = parseInt(values.apiSource);
         values.httpMethod = parseInt(values.httpMethod);
+        // validate ext
+        if (!isJsonStr(values.ext)) {
+          message.error(getIntlContent("SHENYU.DOCUMENT.APIDOC.EXT.INFO"));
+          return;
+        }
         if (!id) {
           res = await addApi({
             ...values
@@ -103,7 +117,7 @@ class AddAndUpdateApiDoc extends Component {
       version = "",
       rpcType = "",
       state = "",
-      ext = "",
+      ext = "{}",
       apiOwner = "",
       apiDesc = "",
       apiSource = "",
@@ -113,10 +127,10 @@ class AddAndUpdateApiDoc extends Component {
     const { getFieldDecorator } = form;
     const formItemLayout = {
       labelCol: {
-        sm: { span: 5 }
+        sm: { span: 6 }
       },
       wrapperCol: {
-        sm: { span: 19 }
+        sm: { span: 18 }
       }
     };
 
@@ -290,7 +304,7 @@ class AddAndUpdateApiDoc extends Component {
                     </Radio.Button>
                   );
                 })}
-               
+
               </Radio.Group>
             )}
           </Form.Item>
@@ -302,13 +316,14 @@ class AddAndUpdateApiDoc extends Component {
               rules: [
                 {
                   required: true,
-                  message: getIntlContent("SHENYU.DOCUMENT.APIDOC.EXT")
+                  message: getIntlContent("SHENYU.DOCUMENT.APIDOC.EXT.INFO")
                 }
               ],
               initialValue: ext
             })(
               <Input
-                placeholder={getIntlContent("SHENYU.DOCUMENT.APIDOC.EXT")}
+                size="large"
+                placeholder={getIntlContent("SHENYU.DOCUMENT.APIDOC.EXT.INFO")}
               />
             )}
           </Form.Item>