diff --git a/frontend/src/pages/meeting/preview.vue b/frontend/src/pages/meeting/preview.vue
index f3123d8..f976b95 100644
--- a/frontend/src/pages/meeting/preview.vue
+++ b/frontend/src/pages/meeting/preview.vue
@@ -111,6 +111,7 @@ const userStore = useUserStore()
 const mode = ref('create')
 const joinCode = ref('')
 const joinPassword = ref('')
+const autoJoin = ref(false)
 
 const modeLabel = computed(() => mode.value === 'create' ? '即将创建新会议' : `即将加入会议 ${joinCode.value}`)
 
@@ -430,6 +431,7 @@ const onJoin = async () => {
 onLoad(async (query) => {
   mode.value = query?.mode === 'join' ? 'join' : 'create'
   joinCode.value = query?.code || ''
+  autoJoin.value = query?.autoJoin === '1' || query?.autoJoin === 'true' || query?.autoJoin === true
   // P0-4：密码不再从 URL query 读取，改为从 meetingStore.draftJoinPayload 一次性消费
   // 防止 URL 历史 / DevTools 留痕；读取后立即清空草稿避免二次写回
   if (mode.value === 'join') {
@@ -450,6 +452,10 @@ onLoad(async (query) => {
   if (hasPermission.value && (selectedVideoId.value || selectedAudioId.value)) {
     await startPreview()
   }
+  if (autoJoin.value && canJoin.value) {
+    await nextTick()
+    onJoin()
+  }
 })
 
 onBeforeUnmount(() => {