diff --git a/public/javascripts/wechat/controllers/join_classgroup.js b/public/javascripts/wechat/controllers/join_classgroup.js
index a63744e3c..ed7692494 100644
--- a/public/javascripts/wechat/controllers/join_classgroup.js
+++ b/public/javascripts/wechat/controllers/join_classgroup.js
@@ -54,6 +54,7 @@ app.controller('JoinClassGroupController', ['$scope', '$http', 'auth', 'config',
         }
 
         if(vm.selectid == 0){
+            rms.save('syllabuses',[]);
             $location.path("/class_list");
             return;
         }