diff --git a/agri-admin/src/main/resources/application-mqtt.yml b/agri-admin/src/main/resources/application-mqtt.yml
index cd625e1..03b98c8 100644
--- a/agri-admin/src/main/resources/application-mqtt.yml
+++ b/agri-admin/src/main/resources/application-mqtt.yml
@@ -1,16 +1,4 @@
 spring:
-  # Redis配置（分布式锁/订阅关系）
-  redis:
-    host: 122.51.109.52
-    port: 6379
-    password: lld123
-    database: 1
-    lettuce:
-      pool:
-        max-active: 8
-        max-idle: 8
-        min-idle: 2
-        max-wait: 10000ms
   # MQTT配置
   mqtt:
     host: tcp://122.51.109.52:1883  # 设备/后端的MQTT TCP地址
diff --git a/agri-framework/src/main/java/com/agri/framework/config/MqttConfig.java b/agri-framework/src/main/java/com/agri/framework/config/MqttConfig.java
index 9d4ed23..85ed54b 100644
--- a/agri-framework/src/main/java/com/agri/framework/config/MqttConfig.java
+++ b/agri-framework/src/main/java/com/agri/framework/config/MqttConfig.java
@@ -169,7 +169,7 @@ public class MqttConfig {
             // 设置QoS级别
             message.setQos(qos);
             // 设置保留消息：true=服务端保留该主题的最新消息，新订阅者可立即获取
-            message.setRetained(true);
+            message.setRetained(false);
 
             // 3. 发布消息
             client.publish(topic, message);
diff --git a/agri-framework/src/main/java/com/agri/framework/interceptor/MqttMessageHandler.java b/agri-framework/src/main/java/com/agri/framework/interceptor/MqttMessageHandler.java
index 03c1f94..6d8e4f3 100644
--- a/agri-framework/src/main/java/com/agri/framework/interceptor/MqttMessageHandler.java
+++ b/agri-framework/src/main/java/com/agri/framework/interceptor/MqttMessageHandler.java
@@ -43,7 +43,7 @@ public class MqttMessageHandler {
     private StringRedisTemplate stringRedisTemplate;
 
     // 读取配置文件中的默认订阅主题（移除心跳主题）
-    @Value("${spring.mqtt.default-topic:device/+/status,frontend/+/control/+}")
+    @Value("${spring.mqtt.default-topic:dtu/+/up,frontend/+/control/+}")
     private String defaultTopic;
 
     /**
@@ -107,8 +107,8 @@ public class MqttMessageHandler {
         try {
             System.out.println("【MQTT接收】topic=" + topic + ", payload=" + payload);
 
-            // 设备状态主题：device/{deviceId}/status
-            if (topic.matches("device/\\w+/status")) {
+            // 设备状态主题：dtu/{deviceId}/up
+            if (topic.matches("dtu/\\w+/up")) {
                 handleDeviceStatus(topic, payload);
             }
             // 处理前端控制指令主题：frontend/{clientId}/control/{deviceId}
@@ -125,7 +125,7 @@ public class MqttMessageHandler {
      * 处理设备状态：转发给订阅的前端
      */
     private void handleDeviceStatus(String topic, String payload) throws MqttException {
-        // 解析设备ID：主题格式为device/{deviceId}/status，分割后第2个元素是设备ID
+        // 解析设备ID：主题格式为dtu/{deviceId}/up，分割后第2个元素是设备ID
         String deviceId = topic.split("/")[1];
         // 查询Redis中订阅该设备的前端列表：sub:{deviceId}
         Set<String> subscribedClients = stringRedisTemplate.opsForSet().members("sub:" + deviceId);
@@ -133,8 +133,8 @@ public class MqttMessageHandler {
         if (subscribedClients != null && !subscribedClients.isEmpty()) {
             // 推送给每个订阅的前端
             for (String clientId : subscribedClients) {
-                // 前端专属主题：frontend/{clientId}/device/{deviceId}/status
-                String frontendTopic = "frontend/" + clientId + "/device/" + deviceId + "/status";
+                // 前端专属主题：frontend/{clientId}/dtu/{deviceId}/up
+                String frontendTopic = "frontend/" + clientId + "/dtu/" + deviceId + "/up";
                 // 发布消息
                 mqttMessageSender.publish(frontendTopic, payload);
                 System.out.println("【设备状态转发】设备" + deviceId + " → 前端" + clientId + "，主题：" + frontendTopic);
@@ -180,7 +180,7 @@ public class MqttMessageHandler {
         ));
 
         // 4. 转发指令到设备
-        String deviceTopic = "device/" + deviceId + "/control";
+        String deviceTopic = "dtu/" + deviceId + "/control";
         mqttMessageSender.publish(deviceTopic, payload);
         System.out.println("【指令转发】前端" + clientId + " → 设备" + deviceId);
     }
@@ -201,7 +201,7 @@ public class MqttMessageHandler {
             return true;
         }
         // 普通用户权限：校验Redis中是否绑定该设备：校验Redis中user_device:{clientId}是否包含该设备ID
-        return stringRedisTemplate.opsForSet().isMember("user_device:" + clientId, deviceId);
+        return Boolean.TRUE.equals(stringRedisTemplate.opsForSet().isMember("user_device:" + clientId, deviceId));
     }
 
     /**
@@ -215,7 +215,7 @@ public class MqttMessageHandler {
         // 推送设备最新状态（可选）
         String latestStatus = stringRedisTemplate.opsForValue().get("device:latest:" + deviceId);
         if (latestStatus != null) {
-            String frontendTopic = "frontend/" + clientId + "/device/" + deviceId + "/status";
+            String frontendTopic = "frontend/" + clientId + "/dtu/" + deviceId + "/up";
             try {
                 mqttMessageSender.publish(frontendTopic, latestStatus);
             } catch (MqttException e) {
@@ -260,7 +260,7 @@ public class MqttMessageHandler {
                     String deviceId = subKey.split(":")[1];
                     deviceIds.add(deviceId);
                     // 构建前端需要取消的MQTT主题
-                    String frontendTopic = "frontend/" + clientId + "/device/" + deviceId + "/status";
+                    String frontendTopic = "frontend/" + clientId + "/dtu/" + deviceId + "/up";
                     frontendTopics.add(frontendTopic);
                     // 从该设备的订阅列表中移除clientId
                     stringRedisTemplate.opsForSet().remove(subKey, clientId);