diff --git a/app/Http/Controllers/ChatController.php b/app/Http/Controllers/ChatController.php
index 092329e..4699188 100644
--- a/app/Http/Controllers/ChatController.php
+++ b/app/Http/Controllers/ChatController.php
@@ -555,7 +555,7 @@ class ChatController extends Controller
     /**
      * 返回所有房间的在线人数，供右侧房间面板轮询使用。
      *
-     * 合并 rooms 数据库记录与 Redis 在线名单，
+     * 使用 ChatStateService::getRoomUsers() 保证与名单逻辑完全一致。
      * 返回 [{ id, name, online, permit_level, door_open }] 数组。
      */
     public function roomsOnlineStatus(): JsonResponse
@@ -563,12 +563,13 @@ class ChatController extends Controller
         $rooms = Room::orderBy('id')->get(['id', 'room_name', 'permit_level', 'door_open']);
 
         $data = $rooms->map(function (Room $room) {
-            $onlineCount = Redis::hlen("room:{$room->id}:users");
+            // 与名单/心跳使用完全相同的方式读取在线人数
+            $onlineCount = count($this->chatState->getRoomUsers($room->id));
 
             return [
                 'id'           => $room->id,
                 'name'         => $room->room_name,
-                'online'       => (int) $onlineCount,
+                'online'       => $onlineCount,
                 'permit_level' => $room->permit_level ?? 0,
                 'door_open'    => (bool) $room->door_open,
             ];