diff --git a/public/react/src/modules/osshackathon/Osshackathon.js b/public/react/src/modules/osshackathon/Osshackathon.js
index 67c81381c..6f723e660 100644
--- a/public/react/src/modules/osshackathon/Osshackathon.js
+++ b/public/react/src/modules/osshackathon/Osshackathon.js
@@ -261,7 +261,7 @@ class Osshackathon extends Component {
 					}
 				</style>
 
-				<div className={"educontent  mb20 persmstyle"} style={{width: "1200px", marginTop: "26px"}}>
+				<div className={"educontent  mb60 persmstyle"} style={{width: "1200px", marginTop: "26px"}}>
 
 					<div className="registrationback"
 							 style={{"background": `url(${getImageUrl(`images/educoder/competitions/heikesong.jpg`)})`,"height":"360px"}}
diff --git a/public/react/src/modules/tpm/shixunchild/Challenges/Challenges.js b/public/react/src/modules/tpm/shixunchild/Challenges/Challenges.js
index 39f733238..a3a3be028 100644
--- a/public/react/src/modules/tpm/shixunchild/Challenges/Challenges.js
+++ b/public/react/src/modules/tpm/shixunchild/Challenges/Challenges.js
@@ -1,18 +1,12 @@
-import React, { Component } from 'react';
+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 { Link } from "react-router-dom";
 
 import { getImageUrl ,markdownToHTML, configShareForCustom} from 'educoder'
 
 import { CircularProgress } from 'material-ui/Progress';
 
-import { Modal, Spin, Tooltip ,message,Icon,Button} from 'antd';
+import { Modal, Spin, Tooltip ,message,Icon,Button,Divider} from 'antd';
 
 import 'antd/lib/pagination/style/index.css';
 
@@ -39,6 +33,8 @@ class Challenges extends Component {
       hidestartshixunsreplacevalue:"",
       operationstrue:false,
 			isSpin:false,
+      boxoffsetHeigh:0,
+      opentitletype:true
     }
   }
 
@@ -64,9 +60,32 @@ class Challenges extends Component {
   }
 
   componentDidMount() {
-    setTimeout(this.ChallengesList(), 1000);
+   this.ChallengesList()
+
   }
+  componentDidUpdate = (prevProps,prevState) => {
+
+      //防止陷入无限循环
+    if(prevState.ChallengesDataList!=this.state.ChallengesDataList){
+      let boxoffsetHeigh;
+      let box=document.getElementById("shixunchallengesid");
+      if(box){
+        boxoffsetHeigh=box.offsetHeight
+        if(boxoffsetHeigh<260){
+          this.setState({
+            opentitletype:false,
+            boxoffsetHeigh:boxoffsetHeigh
+          })
+        }else{
+          this.setState({
+            boxoffsetHeigh:boxoffsetHeigh
+          })
+        }
+
+      }
+    }
 
+  }
   updatamakedown = (id) => {
     setTimeout(() => {
       var shixunDescr = window.editormd.markdownToHTML(id, {
@@ -301,6 +320,12 @@ class Challenges extends Component {
 		})
 	}
 
+  opentitle=()=>{
+    this.setState({
+      opentitletype:!this.state.opentitletype
+    })
+  }
+
   render() {
     let { ChallengesDataList, startbtns, sumidtype ,startshixunCombattype,shixunsreplace,shixunsmessage,hidestartshixunsreplacevalue,operationstrue,AccountProfiletype} = this.state;
     let { loadingContent } = this.props;
@@ -378,8 +403,18 @@ class Challenges extends Component {
                   this.props.identity < 5?<a className="fr font-14 color-blue mr20" href="/forums/2943"
                      target="_blank">实训制作指南</a> : "":""}
               </div>
-
-              <div className={"pd20"}>
+              {this.state.opentitletype===true?<style>
+                {
+                  `
+									#shixunchallengesid{
+								    	max-height: 260px;
+									    overflow: hidden;
+									}
+									`
+                }
+              </style>:""}
+              <div>
+                <div className={"pd20"} id={"shixunchallengesid"}>
                 <style>
                   {
                     `
@@ -389,6 +424,7 @@ class Challenges extends Component {
                     `
                   }
                 </style>
+
                 <div className="justify break_full_word new_li "
                      id="challenge_editorMd_description">
                   <p id="ReactMarkdown" style={{overflow:'hidden'}}>
@@ -397,6 +433,13 @@ class Challenges extends Component {
                     }
                   </p>
                 </div>
+                </div>
+                {this.state.opentitletype===true?<Divider dashed={true} onClick={()=>this.opentitle()} className={"pointer Breadcrumbfont color-grey-9 "}>
+                  <a className={"font-14  color-grey-9"}>阅读全文 <i className={"iconfont icon-jiantou9 font-14"}></i></a>
+                </Divider>:<Divider dashed={true} onClick={()=>this.opentitle()} className={"pointer Breadcrumbfont color-grey-9 "}>
+                  <a className={"font-14  color-grey-9"}>收起全文 <i className={"iconfont icon-changyongtubiao-xianxingdaochu-zhuanqu- font-14"}></i></a>
+                </Divider>}
+
               </div>
             </p>
 
diff --git a/public/react/src/modules/tpm/shixunchild/Challenges/Challengesjupyter.js b/public/react/src/modules/tpm/shixunchild/Challenges/Challengesjupyter.js
index 04a52a61e..fcdbed408 100644
--- a/public/react/src/modules/tpm/shixunchild/Challenges/Challengesjupyter.js
+++ b/public/react/src/modules/tpm/shixunchild/Challenges/Challengesjupyter.js
@@ -1,25 +1,11 @@
 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 { getImageUrl ,markdownToHTML, configShareForCustom} from 'educoder'
-
-import { CircularProgress } from 'material-ui/Progress';
-
-import { Modal, Spin, Tooltip ,message,Icon} from 'antd';
+import { Link } from "react-router-dom";
+import { markdownToHTML, configShareForCustom} from 'educoder'
+import { Divider, Tooltip } from 'antd';
 import LoadingSpin from '../../../../common/LoadingSpin';
 import 'antd/lib/pagination/style/index.css';
-
-import '../shixunchildCss/Challenges.css'
-import ReactDOM from 'react-dom';
+import '../shixunchildCss/Challenges.css';
 import axios from 'axios';
-import AccountProfile from"../../../user/AccountProfile";
 const $ = window.$;
 
 
@@ -36,6 +22,8 @@ class Challengesjupyter extends Component {
 			username:"",
 			booljupyterurls:false,
 			loading:false,
+			boxoffsetHeigh:0,
+			opentitletype:true
 		}
 	}
 
@@ -59,7 +47,29 @@ class Challengesjupyter extends Component {
 			//console.log(error)
 		});
 	}
+	componentDidUpdate = (prevProps,prevState) => {
+
+		//防止陷入无限循环
+		if(prevState.ChallengesDataList!=this.state.ChallengesDataList){
+			let boxoffsetHeigh;
+			let box=document.getElementById("shixunchallengesid");
+			if(box){
+				boxoffsetHeigh=box.offsetHeight
+				if(boxoffsetHeigh<260){
+					this.setState({
+						opentitletype:false,
+						boxoffsetHeigh:boxoffsetHeigh
+					})
+				}else{
+					this.setState({
+						boxoffsetHeigh:boxoffsetHeigh
+					})
+				}
 
+			}
+		}
+
+	}
 	componentDidMount() {
 		setTimeout(this.ChallengesList(), 1000);
 		let id = this.props.match.params.shixunId;
@@ -178,6 +188,11 @@ class Challengesjupyter extends Component {
 		})
 
 	}
+	opentitle=()=>{
+		this.setState({
+			opentitletype:!this.state.opentitletype
+		})
+	}
 
 
 	render() {
@@ -204,33 +219,53 @@ class Challengesjupyter extends Component {
 						<div className={"shixunjianjie"}>
 							<span className="font-16 fl">简介</span>
 							<Tooltip placement="bottom" title={"编辑"}>
-								<a style={{ display: this.props.identity < 5 && ChallengesDataList&&ChallengesDataList.shixun_status < 3 ? "block" : 'none' }}
-									 href={"/shixuns/" + id + "/settings?edit=1"} className="fr color-blue font-14">
+								<Link style={{ display: this.props.identity < 5 && ChallengesDataList&&ChallengesDataList.shixun_status < 3 ? "block" : 'none' }}
+									 to={"/shixuns/" + id + "/settings?edit=1"} className="fr color-blue font-14">
 									编辑
-								</a>
+								</Link>
 							</Tooltip>
 						</div>
-						<div className={"pd20"}>
-							<p id="ReactMarkdown" style={{overflow:'hidden'}}>
-								{ChallengesDataList === undefined ? "" :ChallengesDataList&&ChallengesDataList.description===null?"":
-									<div className={"markdown-body"} dangerouslySetInnerHTML={{__html: markdownToHTML(ChallengesDataList.description).replace(/▁/g,"▁▁▁")}}></div>
-								}
-							</p>
+						{this.state.opentitletype===true?<style>
 							{
-								booljupyterurls===true?
-									(
-										this.state.jupyter_url === null?
-											<div className="mt50 intermediatecenter juplbool">
-												<span className="icon iconfontysl icon-jiazaishibai1"></span>
-												<p className="intermediatecenter sortinxdirection mt5 juplboolp"><p className="colorbluetest">加载实训失败，</p><p className="colorbluetwo" onClick={()=>this.updatamakedowns()}>重新加载</p></p>
+								`
+									#shixunchallengesid{
+								    	max-height: 260px;
+									    overflow: hidden;
+									}
+									`
+							}
+						</style>:""}
+						<div>
 
-											</div>
+							<div className={"pd20"} id={"shixunchallengesid"}>
+								<p id="ReactMarkdown" style={{overflow:'hidden'}}>
+									{ChallengesDataList === undefined ? "" :ChallengesDataList&&ChallengesDataList.description===null?"":
+										<div className={"markdown-body"} dangerouslySetInnerHTML={{__html: markdownToHTML(ChallengesDataList.description).replace(/▁/g,"▁▁▁")}}></div>
+									}
+								</p>
+								{
+									booljupyterurls===true?
+										(
+											this.state.jupyter_url === null?
+												<div className="mt50 intermediatecenter juplbool">
+													<span className="icon iconfontysl icon-jiazaishibai1"></span>
+													<p className="intermediatecenter sortinxdirection mt5 juplboolp"><p className="colorbluetest">加载实训失败，</p><p className="colorbluetwo" onClick={()=>this.updatamakedowns()}>重新加载</p></p>
+
+												</div>
+
+												:""
+										)
+										:""
+								}
+							</div>
 
-											:""
-									)
-									:""
-							}
+							{this.state.opentitletype===true?<Divider dashed={true} onClick={()=>this.opentitle()} className={"pointer Breadcrumbfont color-grey-9 "}>
+								<a className={"font-14  color-grey-9"}>阅读全文 <i className={"iconfont icon-jiantou9 font-14"}></i></a>
+							</Divider>:<Divider dashed={true} onClick={()=>this.opentitle()} className={"pointer Breadcrumbfont color-grey-9 "}>
+								<a className={"font-14  color-grey-9"}>收起全文 <i className={"iconfont icon-changyongtubiao-xianxingdaochu-zhuanqu- font-14"}></i></a>
+							</Divider>}
 						</div>
+
 					</p>
 
 					<div className="justify break_full_word new_li edu-back-white"
diff --git a/public/react/src/modules/tpm/shixunchild/shixunchildCss/Challenges.css b/public/react/src/modules/tpm/shixunchild/shixunchildCss/Challenges.css
index 85ae58e92..90524719c 100644
--- a/public/react/src/modules/tpm/shixunchild/shixunchildCss/Challenges.css
+++ b/public/react/src/modules/tpm/shixunchild/shixunchildCss/Challenges.css
@@ -110,7 +110,7 @@
     line-height: 35px;
     padding: 20px;
     border-bottom: 1px solid #eeee;
-    margin-bottom: 10px;
+    /*margin-bottom: 10px;*/
 }
 
 .pd20{