diff --git a/src/views/meeting/meeting-room/meeting-room-student.vue b/src/views/meeting/meeting-room/meeting-room-student.vue
index be357fb..4363806 100644
--- a/src/views/meeting/meeting-room/meeting-room-student.vue
+++ b/src/views/meeting/meeting-room/meeting-room-student.vue
@@ -577,11 +577,19 @@
               screenShareOwnerUid.value = roomData.screenShareOwnerUid;
             }
             await meeting.initAndJoin(roomData);
+            // ✅ 加入后先检查是否有已存在的远程用户
+            const existingUsers = meeting.client.value?.remoteUsers || [];
+            console.log('[学生端] 加入会议，已存在的远程用户:', existingUsers.map(u => u.uid));
+            
             // 等待 DOM 更新后再尝试播放视频
             await nextTick();
             setTimeout(() => {
               ensurePrimaryVideoPlaying(primaryUid.value);
               ensurePrimaryVideoPlaying(secondaryUid.value);
+              // 如果有已存在的用户，也检查一下
+              existingUsers.forEach(user => {
+                ensurePrimaryVideoPlaying(user.uid);
+              });
             }, 500);
             initSelfWindowPosition();
           })
@@ -642,11 +650,19 @@
       }
       if (classStatus.value === 'in_class') {
         await meeting.initAndJoin(roomData);
+        // ✅ 加入后先检查是否有已存在的远程用户
+        const existingUsers = meeting.client.value?.remoteUsers || [];
+        console.log('[学生端] 加入会议，已存在的远程用户:', existingUsers.map(u => u.uid));
+        
         // 等待 DOM 更新后再尝试播放视频
         await nextTick();
         setTimeout(() => {
           ensurePrimaryVideoPlaying(primaryUid.value);
           ensurePrimaryVideoPlaying(secondaryUid.value);
+          // 如果有已存在的用户，也检查一下
+          existingUsers.forEach(user => {
+            ensurePrimaryVideoPlaying(user.uid);
+          });
         }, 500);
         initSelfWindowPosition();
       } else {