diff --git a/public/react/src/common/Env.js b/public/react/src/common/Env.js
index bdd4584f4..283e82c48 100644
--- a/public/react/src/common/Env.js
+++ b/public/react/src/common/Env.js
@@ -1,3 +1,6 @@
 export function isDev() {
 	return window.location.port === "3007";
-}
\ No newline at end of file
+}
+
+// const isMobile 
+export const isMobile = (/android|webos|iphone|ipad|ipod|blackberry|iemobile|opera mini/i.test(navigator.userAgent.toLowerCase()));
\ No newline at end of file
diff --git a/public/react/src/common/educoder.js b/public/react/src/common/educoder.js
index 1d7c66dbb..5b1d7ac28 100644
--- a/public/react/src/common/educoder.js
+++ b/public/react/src/common/educoder.js
@@ -20,8 +20,7 @@ export { markdownToHTML, uploadNameSizeSeperator, appendFileSizeToUploadFile, ap
         downloadFile, sortDirections } from 	'./TextUtil'
 export { handleDateString, getNextHalfHourOfMoment,formatDuring } from 	'./DateUtil'
 
-
-export { isDev as isDev } from 					'./Env'
+export { isDev as isDev, isMobile } from 					'./Env'
 
 export { toStore as toStore, fromStore as fromStore } from 	'./Store'
 
diff --git a/public/react/src/modules/courses/coursesDetail/CoursesBanner.js b/public/react/src/modules/courses/coursesDetail/CoursesBanner.js
index d8927b8d7..15f57f130 100644
--- a/public/react/src/modules/courses/coursesDetail/CoursesBanner.js
+++ b/public/react/src/modules/courses/coursesDetail/CoursesBanner.js
@@ -625,7 +625,7 @@ class CoursesBanner extends Component {
                         )
                         : ""}
 
-                      {this.props.isStudent()?<a className="fr user_default_btn user_blue_btn mr20 font-18"
+                      {this.props.isStudent()?this.props.current_user&&this.props.current_user.course_is_end===true?"":<a className="fr user_default_btn user_blue_btn mr20 font-18"
                                                  onClick={() => this.exitclass()}
                       > 退出课堂 </a>:""}
 
diff --git a/public/react/src/modules/courses/members/modal/AddStudentModal.js b/public/react/src/modules/courses/members/modal/AddStudentModal.js
index de95bc741..cf7583a51 100644
--- a/public/react/src/modules/courses/members/modal/AddStudentModal.js
+++ b/public/react/src/modules/courses/members/modal/AddStudentModal.js
@@ -29,7 +29,7 @@ class AddStudentModal extends Component{
     const { name, school_name } = this.state
     let url = `/courses/${courseId}/search_users.json?page=${page}&limit=${pageCount}&school_name=${school_name || ''}&name=${name || ''}`
     this.setState({ loading: true })
-    axios.get(url)
+    axios.get(encodeURI(url))
     .then((response) => {
       if (!response.data.users || response.data.users.length == 0) {
         this.setState({
diff --git a/public/react/src/modules/courses/members/teacherList.js b/public/react/src/modules/courses/members/teacherList.js
index ee1f1dacb..70b1e3bd6 100644
--- a/public/react/src/modules/courses/members/teacherList.js
+++ b/public/react/src/modules/courses/members/teacherList.js
@@ -377,7 +377,7 @@ class studentsList extends Component{
     if(searchValue!=""){
       url+='&search='+searchValue;
     }
-    const result = await axios.get(url)
+    const result = await axios.get(encodeURI(url))
     // axios.get((url)).then((result)=>{
       if (result.data.teacher_list) {
         this.setState({ 
diff --git a/public/react/src/modules/paths/PathDetail/DetailCardsEditAndAdd.js b/public/react/src/modules/paths/PathDetail/DetailCardsEditAndAdd.js
index d1bf6e1f0..f3c9d514b 100644
--- a/public/react/src/modules/paths/PathDetail/DetailCardsEditAndAdd.js
+++ b/public/react/src/modules/paths/PathDetail/DetailCardsEditAndAdd.js
@@ -160,7 +160,7 @@ class DetailCardsEditAndAdd extends Component{
       url+="&type="+id;
     }
 
-    axios.get(url).then((result)=>{
+    axios.get(encodeURI(url)).then((result)=>{
       if(result.status===200){
         this.setState({
           ChooseShixunList:result.data,
@@ -322,7 +322,7 @@ class DetailCardsEditAndAdd extends Component{
 				 if(type!=0){
 					 url+="&type="+type;
 				 }
-				 axios.get(url).then((result)=>{
+				 axios.get(encodeURI(url)).then((result)=>{
 					 if(result.status===200){
 						 let list =result.data.shixun_list;
 
diff --git a/public/react/src/modules/tpm/TPMBanner.js b/public/react/src/modules/tpm/TPMBanner.js
index 0009e1f98..997786db2 100644
--- a/public/react/src/modules/tpm/TPMBanner.js
+++ b/public/react/src/modules/tpm/TPMBanner.js
@@ -205,7 +205,7 @@ class TPMBanner extends Component {
     SenttotheSearch=(value)=>{
         let id = this.props.match.params.shixunId;
         let url="/shixuns/" + id +"/search_user_courses.json?search="+value;
-        axios.get(url, {
+        axios.get(encodeURI(url), {
             params: {
                 page:1,
                 limit:10