diff --git a/agri-admin/src/main/resources/application-mqtt.yml b/agri-admin/src/main/resources/application-mqtt.yml
index 59f3ace..f769be7 100644
--- a/agri-admin/src/main/resources/application-mqtt.yml
+++ b/agri-admin/src/main/resources/application-mqtt.yml
@@ -5,7 +5,7 @@ spring:
     username: admin  # Mosquitto共用账号
     password: Admin#12345678 # Mosquitto密码
     client-id: springboot-backend  # 截取UUID前8位（自动去横线）
-    default-topic: dtu/+/up,frontend/+/control/+,frontend/+/online # 后端监听的主题
+    default-topic: dtu/+/up,dtu/+/ack,frontend/+/control/+,frontend/+/online # 后端监听的主题
     qos: 0  # 消息可靠性
     timeout: 60 # 连接超时
     keep-alive: 60 # 心跳间隔