diff --git a/src/renderer/src/views/prepare/index.vue b/src/renderer/src/views/prepare/index.vue
index 9b7592e..ca2b197 100644
--- a/src/renderer/src/views/prepare/index.vue
+++ b/src/renderer/src/views/prepare/index.vue
@@ -308,7 +308,7 @@ export default {
       if(item.fileFlag === '课件') {
         // 关闭状态，打开上课相关功能(已打开，忽略)
         const id = sessionStore.has('activeClass.id') ? sessionStore.get('activeClass.id') : null
-        // if (id && id == item.id) return ElMessage.warning('当前正在上课，请勿重复操作')
+        if (id && id == item.id) return ElMessage.warning('当前正在上课，请勿重复操作')
         this.openReserv()
       }
       if(item.fileFlag === 'apt') {