diff --git a/src/views/study/coursenew.vue b/src/views/study/coursenew.vue
index 1dcc0133..c16dace8 100644
--- a/src/views/study/coursenew.vue
+++ b/src/views/study/coursenew.vue
@@ -435,6 +435,9 @@
         return treeList;
       }
     },
+    destroyed(){
+      this.stopStudyTime();
+    },
     methods: {
       toUserHome(tea){
         this.$router.push({path:this.$xpage.getHomePath(tea.teacherId)})