diff --git a/pages/application/onlinexxks/video_study.vue b/pages/application/onlinexxks/video_study.vue
index ed8f4f5..eecea6d 100644
--- a/pages/application/onlinexxks/video_study.vue
+++ b/pages/application/onlinexxks/video_study.vue
@@ -114,7 +114,6 @@ import {basePath, loginUser, baseImgPath} from "@/common/tool";
 let faceAuthTimer; // 人脸认证计时器
 let throttleTimer;
 let throttleFlag;
-let videoContext;
 export default {
   data() {
     return {
@@ -142,7 +141,7 @@ export default {
       videoSrc: "", // 视频地址
       videoPoster: "", // 视频封面图
       scrollHeight: '0px', // scroll-view减去的高度
-      // videoContext: null, // 视频上下文
+      videoContext: null, // 视频上下文
       submitTimeWaitForCount: 0, // 提交时间等待次数
       verification:false,// 是否人脸认证
     }
@@ -327,7 +326,7 @@ export default {
       this.videoList = resData.pd.VIDEOLIST;
     },
     async fnVideoSwitching(videoData, hasNodes, index, index1) {
-      videoContext && videoContext.pause();
+      this.videoContext && this.videoContext.pause();
       this.submitTimeWaitForCount = 0;
       if (this.changeVideoPlayTime !== 0) {
         await this.fnSubmitPlayTime("0", this.changeVideoPlayTime);
@@ -364,9 +363,7 @@ export default {
       if (!resData.pd.RESOURCETIME) {
         await this.fnSubmitPlayTime("0", 0);
       }
-      console.log('resData.pd.RESOURCETIME:'+resData.pd.RESOURCETIME)
       this.serverVideoPlayTime = Math.floor(resData.pd.RESOURCETIME) || 0
-      console.log('this.serverVideoPlayTime:'+this.serverVideoPlayTime)
       if (this.ISFACE === "1") {
         if (this.verification) {
           this.fnCreateVideo();
@@ -378,13 +375,14 @@ export default {
       }
     },
     fnCreateVideo() {
-      videoContext = null;
-      videoContext = uni.createVideoContext("video");
-      videoContext.play();
-      console.log('fnCreateVideo:'+this.serverVideoPlayTime)
+      if (!this.videoContext) {
+        this.videoContext = uni.createVideoContext("video");
+      }
+      this.videoContext.play();
       this.serverVideoPlayTime !== 0 && videoContext.seek(this.serverVideoPlayTime);
     },
-    async fnTimeUpdate(event) {
+    fnTimeUpdate(event) {
+      this.throttle(async () => {
         const currentTime = event.detail.currentTime;
         if (currentTime - this.serverVideoPlayTime >= 10) {
           uni.navigateBack();
@@ -392,7 +390,7 @@ export default {
         }
         //app视频自带bug，判断当前视频进度与服务器进度差，如果小于10秒，则退出重新进
         if(currentTime !== 0 && Math.abs(currentTime - this.serverVideoPlayTime) > 10) {
-          videoContext.pause();
+          this.videoContext.pause();
           uni.showModal({
             title: "提示",
             content: "app开发环境问题，偶现当前视频进度获取不准确，为了防止进度被覆盖，请退出重新进入！",
@@ -412,6 +410,7 @@ export default {
           this.submitTimeWaitForCount = 0;
           await this.fnSubmitPlayTime("0", currentTime);
         }
+      }, 1000);
     },
     async fnSubmitPlayTime(IS_END, RESOURCETIME) {
       if(!this.videoData.VIDEOCOURSEWARE_ID) {
@@ -463,7 +462,7 @@ export default {
         this.videoList[this.firstIndex].percent = percent;
       }
       if (resData.pd.CANEXAM === "1") {
-        videoContext.pause();
+        this.videoContext.pause();
         uni.showModal({
           title: "提示",
           content: "当前班级内所有课程均已学完，是否直接参加考试？",
@@ -471,12 +470,12 @@ export default {
           cancelButtonText: "否",
           success: (res) => {
             if (res.confirm) {
-              videoContext && videoContext.exitFullScreen()
+              this.videoContext && this.videoContext.exitFullScreen()
               uni.navigateTo({
                 url: '/pages/application/onlinexxks/course_exam?STAGEEXAMPAPERINPUT_ID=' + resData.paper.STAGEEXAMPAPERINPUT_ID + '&STAGEEXAMPAPER_ID=' + resData.paper.STAGEEXAMPAPERINPUT_ID + '&CLASS_ID=' + this.CLASS_ID + '&POST_ID=' + resData.pd.POST_ID + '&STUDENT_ID=' + this.STUDENT_ID + '&NUMBEROFEXAMS=' + resData.pd.NUMBEROFEXAMS + '&entrySite=video_study'
               })
             } else if (res.cancel) {
-              videoContext.play();
+              this.videoContext.play();
             }
           },
         });
@@ -489,7 +488,7 @@ export default {
       }
       this.changeVideoPlayTime = 0;
       this.fnSubmitPlayTime("1", 0);
-      videoContext.pause();
+      this.videoContext.pause();
       this.fnClearInterval();
     },
     fnPlay() {
@@ -523,7 +522,7 @@ export default {
         CHAPTER_ID: this.videoData.CHAPTER_ID,
         VIDEOCOURSEWARE_ID: this.videoData.VIDEOCOURSEWARE_ID,
       })
-      videoContext && videoContext.exitFullScreen()
+      this.videoContext && this.videoContext.exitFullScreen()
       const resData = await this.post('/app/user/getUserFace', {
         USERNAME: loginUser.NAME,
         USER_ID: loginUser.USER_ID,