diff --git a/admin/src/main/java/com/multictrl/modules/business/service/impl/DJIBaseServiceImpl.java b/admin/src/main/java/com/multictrl/modules/business/service/impl/DJIBaseServiceImpl.java
index da138c6..580d46e 100644
--- a/admin/src/main/java/com/multictrl/modules/business/service/impl/DJIBaseServiceImpl.java
+++ b/admin/src/main/java/com/multictrl/modules/business/service/impl/DJIBaseServiceImpl.java
@@ -50,8 +50,7 @@ public class DJIBaseServiceImpl implements DJIBaseService {
         mqttPushService.pushMessageByClient1(topic, payload.toString());
         String bid = payload.getStr("bid");
         String tid = payload.getStr("tid");
-        // 设备回复只回传相同的 bid（tid 会重新生成），因此以 bid 作为关联回复的缓存键
-        String cacheKey = bid;
+        String cacheKey = bid + "_" + tid;
 
         // 记录当前等待回复的命令，供前端模拟回复使用
         String deviceSn = extractDeviceSn(topic);