diff --git a/plugins/douyu/main.py b/plugins/douyu/main.py
index b7eb4be..81154d2 100644
--- a/plugins/douyu/main.py
+++ b/plugins/douyu/main.py
@@ -170,6 +170,9 @@ class DouyuPlugin(MessagePluginInterface):
                 await self.bot.send_text_message(roomid or sender, "请提供房间号，例如：订阅斗鱼 7718843", sender)
                 return True, "命令格式错误"
             room_id = parts[1].strip()
+            if not room_id.isdigit():
+                await self.bot.send_text_message(roomid or sender, "房间号必须是数字，例如：斗鱼订阅 52876", sender)
+                return True, "命令格式错误"
             ok = self.redis_manager.add_group_room(roomid or sender, room_id)
             await self.bot.send_text_message(roomid or sender, f"✅ 已订阅斗鱼房间 {room_id}", sender)
             return True, "订阅成功" if ok else "订阅失败"
@@ -179,6 +182,9 @@ class DouyuPlugin(MessagePluginInterface):
                 await self.bot.send_text_message(roomid or sender, "请提供房间号，例如：取消订阅斗鱼 7718843", sender)
                 return True, "命令格式错误"
             room_id = parts[1].strip()
+            if not room_id.isdigit():
+                await self.bot.send_text_message(roomid or sender, "房间号必须是数字，例如：取消斗鱼订阅 52876", sender)
+                return True, "命令格式错误"
             ok = self.redis_manager.remove_group_room(roomid or sender, room_id)
             await self.bot.send_text_message(roomid or sender, f"✅ 已取消订阅斗鱼房间 {room_id}", sender)
             return True, "取消成功" if ok else "取消失败"