diff --git a/src/components/Course/exam.vue b/src/components/Course/exam.vue
index e380f203..0319c471 100644
--- a/src/components/Course/exam.vue
+++ b/src/components/Course/exam.vue
@@ -179,9 +179,14 @@ export default {
       this.loadExamInfo();
     }
   },
+  destroyed() {
+      if(this.timer){
+        window.clearInterval(this.timer);
+      }
+  },
   methods: {
     changeTimer(){
-    	if(this.timerValue==0){
+    	if(this.timerValue<=0){
     		window.clearInterval(this.timer);
     		//系统自动提交
     		this.confirmStop();
@@ -332,7 +337,7 @@ export default {
                 }).then(() => {
                   this.submitTest()
                 }).catch(()=>{
-                  
+
                 })
     	}else{
         this.submitTest()
@@ -342,7 +347,8 @@ export default {
         //console.log(this.paper.items);
         let totalScore=0;
         this.paper.items.forEach(item => {
-        totalScore+=item.score;//加到总分中
+          item.score=parseInt(item.score);
+          totalScore+=item.score;//加到总分中
           if(item.type != 102){
             item.userAnswer='';
             item.options.forEach(opt => {
@@ -397,6 +403,10 @@ export default {
       return this.lastScore;
     },
     submitTest(){ //提交处理
+      //清空提示
+      if(this.timer){
+        window.clearInterval(this.timer);
+      }
       let now=new Date();
       let testScore=this.countTest();
       let postData={