diff --git a/public/react/src/modules/tpm/jupyter/index.js b/public/react/src/modules/tpm/jupyter/index.js
index 3ba648ca8..6883aa72f 100644
--- a/public/react/src/modules/tpm/jupyter/index.js
+++ b/public/react/src/modules/tpm/jupyter/index.js
@@ -327,6 +327,7 @@ function JupyterTPI (props) {
   }, [props]);
 
   const onFinish= () =>{
+    Modal.destroyAll();
     Modal.confirm({
       title: '倒计时截止',
       content: (
@@ -346,7 +347,7 @@ function JupyterTPI (props) {
       title: '服务中断提醒',
       content: (
         <p style={{ lineHeight: '24px' }}>
-         jupyter将于<Countdown value={jupytertime} format="HH:mm"/>分钟后服务中断，是否需要延长使用时间？
+         jupyter将于<span className={"Countdownfonttpi"}><Countdown value={jupytertime} format="HH:mm:ss"/></span>时间后服务中断，是否需要延长使用时间？
         </p>
       ),
       okText: '立即延长',
diff --git a/public/react/src/modules/tpm/jupyter/index.scss b/public/react/src/modules/tpm/jupyter/index.scss
index 5cc42b1be..b2c900652 100644
--- a/public/react/src/modules/tpm/jupyter/index.scss
+++ b/public/react/src/modules/tpm/jupyter/index.scss
@@ -249,4 +249,13 @@ line-height: 50px !important;
   height:1px;
   overflow: hidden;
   display: block;
+}
+
+.Countdownfonttpi{
+  width: 60px;
+  display: inline-block;
+}
+
+.Countdownfonttpi .ant-statistic-content-value{
+  font-size: 14px;
 }
\ No newline at end of file
diff --git a/public/react/src/modules/tpm/shixunchild/Challenges/Challengesjupyter.js b/public/react/src/modules/tpm/shixunchild/Challenges/Challengesjupyter.js
index 746766dfa..c1a5f8dea 100644
--- a/public/react/src/modules/tpm/shixunchild/Challenges/Challengesjupyter.js
+++ b/public/react/src/modules/tpm/shixunchild/Challenges/Challengesjupyter.js
@@ -120,12 +120,12 @@ class Challengesjupyter extends Component {
 						let remainingSeconds=response.data.remainingSeconds;
 						// let summain=3600 * 1000;
 						let sums= remainingSeconds * 1000;
-						let endsms=(remainingSeconds-300<0?0:remainingSeconds-300)*1000
+						let endsms=(remainingSeconds-300<=0?0:remainingSeconds-300)*1000
 						// let sum=summain-sums;
 						setTimeout(()=>{
 							this.setState({
 								jupytertime:Date.now() +sums,
-								endtimes:endsms===0?Date.now() +1000:Date.now() +endsms
+								endtimes:endsms===0?Date.now()+1000:Date.now() +endsms
 							})
 						},500);
 					}
@@ -423,6 +423,7 @@ class Challengesjupyter extends Component {
 	}
 
 	onFinish=()=>{
+		Modal.destroyAll();
 		let id=this.props.match.params.shixunId;
 		let that=this;
 		Modal.confirm({
@@ -444,10 +445,10 @@ class Challengesjupyter extends Component {
 		let id=this.props.match.params.shixunId;
 		let that=this;
 		Modal.confirm({
-			title:"jupyter将于"+<Countdown value={this.state.jupytertime} format="HH:mm" onFinish={this.onFinish}/>+"分钟后服务中断，是否需要延长使用时间？",
+			title:"服务中断提醒",
 			content: (
 				<p style={{ lineHeight: '24px' }}>
-					命令行即将中断，需要延长使用时间吗？
+					jupyter将于<span className={"Countdownfonttpm"}><Countdown value={this.state.jupytertime} format="HH:mm:ss" onFinish={this.onFinish}/></span>时间后服务中断，是否需要延长使用时间？
 				</p>
 			),
 			okText: '立即延长',
diff --git a/public/react/src/modules/tpm/shixunchild/shixunchildCss/Challenges.css b/public/react/src/modules/tpm/shixunchild/shixunchildCss/Challenges.css
index d2bba2f84..b59bd86fd 100644
--- a/public/react/src/modules/tpm/shixunchild/shixunchildCss/Challenges.css
+++ b/public/react/src/modules/tpm/shixunchild/shixunchildCss/Challenges.css
@@ -239,3 +239,12 @@
     background-color: #29BD8B !important;
     border-color: transparent ;
 }
+
+.Countdownfonttpm{
+    width: 60px;
+    display: inline-block;
+}
+
+.Countdownfonttpm .ant-statistic-content-value{
+    font-size: 14px;
+}
\ No newline at end of file
diff --git a/public/react/src/redux/actions/jupyter.js b/public/react/src/redux/actions/jupyter.js
index 9b3bc4748..1a3654c3f 100644
--- a/public/react/src/redux/actions/jupyter.js
+++ b/public/react/src/redux/actions/jupyter.js
@@ -273,9 +273,9 @@ export const timeinfo_with_tpi = (identifier, dispatch) => {
             let remainingSeconds=res.data.remainingSeconds;
             // let summain=3600 * 1000;
             let sums= remainingSeconds * 1000;
-            let endsms=(remainingSeconds-300<0?0:remainingSeconds-300)*1000
+            let endsms=(remainingSeconds-300<=0?0:remainingSeconds-300)*1000
             // let sum=summain-sums;
-            setTimeout(()=>{ dispatch(addjypertime(Date.now() +sums,endsms===0?Date.now() +1000:Date.now() +endsms))},500);
+            setTimeout(()=>{ dispatch(addjypertime(Date.now() +sums,endsms===0?Date.now()+1000:Date.now() +endsms))},500);
           }
         }
       }