diff --git a/public/react/src/modules/courses/boards/TopicDetail.js b/public/react/src/modules/courses/boards/TopicDetail.js
index f4df177c7..483dafe18 100644
--- a/public/react/src/modules/courses/boards/TopicDetail.js
+++ b/public/react/src/modules/courses/boards/TopicDetail.js
@@ -1,29 +1,15 @@
 import React, { Component } from 'react';
-import { Redirect } from 'react-router';
-
-import { BrowserRouter as Router, Route, Link, Switch } from "react-router-dom";
-
-import PropTypes from 'prop-types';
-
-import classNames from 'classnames'
-
 import axios from 'axios'
-
 import moment from 'moment'
-
 import Comments from '../../comment/Comments'
-
-import update from 'immutability-helper'
-import RewardDialog from '../../common/RewardDialog';
 import {ImageLayerOfCommentHOC} from '../../page/layers/ImageLayerOfCommentHOC'
-
 import MemoDetailMDEditor from '../../forums/MemoDetailMDEditor'
 import { RouteHOC } from './common.js'
 import '../../forums/Post.css'
 import '../../forums/RightSection.css'
 import './TopicDetail.css'
 import '../common/courseMessage.css'
-import { Pagination, Tooltip } from 'antd'
+import { Pagination, Tooltip,Button } from 'antd'
 import { bytesToSize, ConditionToolTip, markdownToHTML, MarkdownToHtml , setImagesUrl } from 'educoder'
 import SendToCourseModal from '../coursesPublic/modal/SendToCourseModal'
 import CBreadcrumb from '../common/CBreadcrumb'
@@ -32,7 +18,8 @@ import { generateComments, generateChildComments, _findById, handleContentBefore
   , handleDeleteComment, handleCommentPraise, handleHiddenComment } from '../common/CommentsHelper'
 
 const $ = window.$
-const REPLY_PAGE_COUNT = 10
+const REPLY_PAGE_COUNT = 10;
+let setTime;
 function urlStringify(params) {
   let noParams = true;
   let paramsUrl = '';
@@ -57,7 +44,8 @@ class TopicDetail extends Component {
         pageCount: 1,
         comments: [],
         goldRewardDialogOpen: false,
-        author:undefined
+        author:undefined,
+        commentstype:false
       }
     }
     componentDidMount() {
@@ -512,11 +500,26 @@ class TopicDetail extends Component {
       }
     }
 
+  startcomments=()=>{
+    setTime = setInterval( ()=> {
+        this.fetchReplies()
+      }, 5000);
+      this.setState({
+        commentstype:true
+      })
+    }
+
+  clearcomments=()=>{
+    clearInterval(setTime);
+    this.setState({
+      commentstype:false
+    })
+  }
 
   	render() {
   		const { match, history } = this.props
       const { recommend_shixun, current_user,author_info } = this.props;
-      const { memo, comments, hasMoreComments, goldRewardDialogOpen, pageCount, total_count , author } = this.state;
+      const { memo, comments, hasMoreComments, commentstype, pageCount, total_count , author } = this.state;
       const messageId = match.params.topicId
       if (this.state.memoLoading || !current_user) {
         return <div className="edu-back-white" id="forum_index_list"></div>
@@ -560,7 +563,7 @@ class TopicDetail extends Component {
             ref="sendToCourseModal"
             {...this.props}
             moduleName="帖子"
-            selectedMessageIds={[messageId]}
+            seletedMessageIds={[messageId]}
           ></SendToCourseModal>
           <div className="clearfix">
         		<div id="forum_list" className="forum_table mh650">
@@ -690,9 +693,15 @@ class TopicDetail extends Component {
                   */}
                     <div className="padding20  memoReplies commentsDelegateParent comments_hideSecondReplyUserHeader"
                         style={{ display: (comments && !!comments.length) ? 'block' : 'none', paddingBottom: '0px' }}>
-                      <div className="replies_count">
+                      <div className="replies_count commentstypetop">
+                        {this.props.isAdmin()===true? <span className="commentstypebutton font-16 ">
+                          {this.state.commentstype===false?<Button type="primary" onClick={()=>this.startcomments()}>开启刷新评论</Button>
+                            :<Button type="danger" onClick={()=>this.clearcomments()}>停止刷新</Button>}
+                        </span>:""}
+
                         <span className="labal font-16">全部回复</span>
                         <span className="count font-16">({memo.total_replies_count})</span>
+
                       </div>
 
                       <Comments comments={comments} user={current_user}
diff --git a/public/react/src/modules/courses/common/courseMessage.css b/public/react/src/modules/courses/common/courseMessage.css
index f258c8ee9..c5602e5db 100644
--- a/public/react/src/modules/courses/common/courseMessage.css
+++ b/public/react/src/modules/courses/common/courseMessage.css
@@ -56,4 +56,12 @@
 
 .panel-comment_item .comment_content {
   margin-top: 4px;
+}
+
+.commentstypetop{
+  position: relative;
+}
+.commentstypebutton{
+  position: absolute;
+  right: 0px;
 }
\ No newline at end of file