diff --git a/pages/YNEduApp/learn/learn.vue b/pages/YNEduApp/learn/learn.vue
index 2c64d1f..36a9615 100644
--- a/pages/YNEduApp/learn/learn.vue
+++ b/pages/YNEduApp/learn/learn.vue
@@ -9,7 +9,8 @@
         :enable-progress-gesture="false"
         @error="videoErrorCallback"
         @timeupdate="videoTimeUpdate"
-        controls
+        :controls="true"
+        :autoplay="true"
       />
     </div>
 
diff --git a/pages/YNEduApp/prac/exercises.vue b/pages/YNEduApp/prac/exercises.vue
index af96a93..2795efb 100644
--- a/pages/YNEduApp/prac/exercises.vue
+++ b/pages/YNEduApp/prac/exercises.vue
@@ -410,8 +410,16 @@ export default {
       console.log('🚀 ~ handleJump ~ item:', item, this.recordId)
       if (item === 'prev') {
         this.nowNum--
+        if (this.nowNum < 1) {
+          this.nowNum = 1
+          return
+        }
       } else if (item === 'next') {
         this.nowNum++
+        if (this.nowNum > this.allNum) {
+          this.nowNum = this.allNum
+          return
+        }
       } else if (item === 'jump') {
         this.nowNum = index
       }