diff --git a/public/react/src/modules/courses/coursesDetail/CoursesBanner.js b/public/react/src/modules/courses/coursesDetail/CoursesBanner.js
index 5e332f3be..efc30ee2e 100644
--- a/public/react/src/modules/courses/coursesDetail/CoursesBanner.js
+++ b/public/react/src/modules/courses/coursesDetail/CoursesBanner.js
@@ -518,7 +518,32 @@ class CoursesBanner extends Component {
 
                     </div>
 
-                    {excellent===false?
+                    {/*{excellent===false?*/}
+                    {/*  :*/}
+                    {/*  <div>*/}
+                    {/*    <style>*/}
+                    {/*      {*/}
+                    {/*        `*/}
+                    {/*      .user_white_btn{border: 1px solid #ffffff;color: #ffffff!important;}*/}
+                    {/*      */}
+                    {/*      `*/}
+                    {/*      }*/}
+                    {/*    </style>*/}
+                    {/*    /!*coursedata.course_identity === 6 是非课堂成员*!/*/}
+                    {/*    {coursedata.course_identity === 6&&coursedata.educoder_teacher===false?*/}
+                    {/*      <a className="fr user_default_btn user_white_btn mr20 font-18" style={{width:"130px"}}*/}
+                    {/*         onClick={() => this.myyslgradin()}>加入课堂</a>: ""}*/}
+
+                    {/*    {coursedata.course_identity === 6&&coursedata.educoder_teacher===true?*/}
+                    {/*      <a className="fr user_default_btn user_white_btn mr20 font-18"  style={{width:"130px"}}*/}
+                    {/*         onClick={() => this.myyslgradin()}>加入课堂</a>: ""}*/}
+
+                    {/*    /!*{this.props.isStudent()?<a className="fr user_default_btn user_blue_btn mr20 font-18"*!/*/}
+                    {/*    /!*                           onClick={() => this.exitclass()}*!/*/}
+                    {/*    /!*> 退出课堂 </a>:""}*!/*/}
+                    {/*  </div>*/}
+
+                    {/*}*/}
                     <div>
                       {coursedata.switch_to_student === true ?
                         <Tooltip placement="bottom" title={
@@ -566,31 +591,7 @@ class CoursesBanner extends Component {
                       > 退出课堂 </a>:""}
 
                     </div>
-                      :
-                           <div>
-                             <style>
-                               {
-                                 `
-                          .user_white_btn{border: 1px solid #ffffff;color: #ffffff!important;}
-                          
-                          `
-                               }
-                             </style>
-                             {/*coursedata.course_identity === 6 是非课堂成员*/}
-                             {coursedata.course_identity === 6&&coursedata.educoder_teacher===false?
-                               <a className="fr user_default_btn user_white_btn mr20 font-18" style={{width:"130px"}}
-                                  onClick={() => this.myyslgradin()}>加入课堂</a>: ""}
-
-                             {coursedata.course_identity === 6&&coursedata.educoder_teacher===true?
-                               <a className="fr user_default_btn user_white_btn mr20 font-18"  style={{width:"130px"}}
-                                  onClick={() => this.myyslgradin()}>加入课堂</a>: ""}
-
-                             {/*{this.props.isStudent()?<a className="fr user_default_btn user_blue_btn mr20 font-18"*/}
-                             {/*                           onClick={() => this.exitclass()}*/}
-                             {/*> 退出课堂 </a>:""}*/}
-                           </div>
 
-                    }
 
 										<style>
 											{