diff --git a/public/react/src/modules/tpm/shixunchild/Challenges/Challengesjupyter.js b/public/react/src/modules/tpm/shixunchild/Challenges/Challengesjupyter.js
index 011446cf4..810aee050 100644
--- a/public/react/src/modules/tpm/shixunchild/Challenges/Challengesjupyter.js
+++ b/public/react/src/modules/tpm/shixunchild/Challenges/Challengesjupyter.js
@@ -1,14 +1,14 @@
 import React, { Component } from 'react';
 import { Link } from "react-router-dom";
 import { markdownToHTML, configShareForCustom,getImageUrl,getUploadActionUrlthree,appendFileSizeToUploadFileAll} from 'educoder'
-import { Divider, Tooltip,Upload,Modal,Countdown} from 'antd';
+import { Divider, Tooltip,Upload,Modal,Statistic} from 'antd';
 import LoadingSpin from '../../../../common/LoadingSpin';
 import 'antd/lib/pagination/style/index.css';
 import '../shixunchildCss/Challenges.css';
 import axios from 'axios';
 import {addjypertime} from "../../../../redux/actions/jupyter";
 const $ = window.$;
-
+const { Countdown } = Statistic;
 class Challengesjupyter extends Component {
 	constructor(props) {
 		super(props)