diff --git a/agileboot-domain/src/main/java/com/agileboot/domain/ab98/user/Ab98UserApplicationService.java b/agileboot-domain/src/main/java/com/agileboot/domain/ab98/user/Ab98UserApplicationService.java
index 9377018..c5544dd 100644
--- a/agileboot-domain/src/main/java/com/agileboot/domain/ab98/user/Ab98UserApplicationService.java
+++ b/agileboot-domain/src/main/java/com/agileboot/domain/ab98/user/Ab98UserApplicationService.java
@@ -198,12 +198,23 @@ public class Ab98UserApplicationService {
             throw new ApiException(ErrorCode.Internal.INTERNAL_ERROR, "姓名不匹配");
         }
         AddAb98UserCommand addAb98UserCommand = getAddAb98UserCommand(ab98UserDto);
-        Ab98UserModel model = userModelFactory.create();
-        model.loadAddCommand(addAb98UserCommand);
-        model.insert();
-        ab98UserEntity = model.selectById();
-        saveQyUserInfoByAb98(qyUser, ab98UserEntity);
-        return ab98UserEntity;
+
+        ab98UserEntity = userService.getByIdnum(addAb98UserCommand.getIdnum());
+        if (ab98UserEntity != null) {
+            Ab98UserModel model = userModelFactory.loadById(ab98UserEntity.getAb98UserId());
+            addAb98UserCommand.setAb98UserId(ab98UserEntity.getAb98UserId());
+            model.loadUpdateCommand(addAb98UserCommand);
+            model.updateById();
+            saveQyUserInfoByAb98(qyUser, ab98UserEntity);
+            return ab98UserEntity;
+        } else {
+            Ab98UserModel model = userModelFactory.create();
+            model.loadAddCommand(addAb98UserCommand);
+            model.insert();
+            ab98UserEntity = model.selectById();
+            saveQyUserInfoByAb98(qyUser, ab98UserEntity);
+            return ab98UserEntity;
+        }
     }
 
     @NotNull
diff --git a/agileboot-domain/src/main/java/com/agileboot/domain/mqtt/MqttService.java b/agileboot-domain/src/main/java/com/agileboot/domain/mqtt/MqttService.java
index ae24a9d..d027ab3 100644
--- a/agileboot-domain/src/main/java/com/agileboot/domain/mqtt/MqttService.java
+++ b/agileboot-domain/src/main/java/com/agileboot/domain/mqtt/MqttService.java
@@ -8,6 +8,7 @@ import lombok.RequiredArgsConstructor;
 import lombok.Setter;
 import lombok.extern.slf4j.Slf4j;
 import org.eclipse.paho.client.mqttv3.persist.MemoryPersistence;
+import org.springframework.scheduling.annotation.Scheduled;
 import org.springframework.stereotype.Service;
 import org.eclipse.paho.client.mqttv3.*;
 
@@ -31,6 +32,13 @@ public class MqttService implements MqttCallback {
                 && config.getUsername().equals(other.getUsername())
                 && config.getPassword().equals(other.getPassword());
         }
+
+        public boolean isSameConfig(MqttServerEntity other) {
+            if (other == null) {
+                return false;
+            }
+            return config.getMqttServerId().equals(other.getMqttServerId());
+        }
     }
 
 
@@ -55,8 +63,21 @@ public class MqttService implements MqttCallback {
         });
     }
 
+    @Scheduled(fixedRate = 5 * 60 * 1000) // 每5分钟执行一次 (300000毫秒)
+    public void scheduledConnect() {
+        try {
+            connect();
+        } catch (MqttException e) {
+            log.error("定时MQTT连接失败", e);
+        }
+    }
+
     public void connect() throws MqttException {
         for (MqttServerEntity config : mqttServerService.selectAll()) {
+            if (clientConfigs.stream().anyMatch(cc -> cc.isSameConfig(config))) {
+                continue;
+            }
+
             // 检查是否已有相同连接的client实例
             ClientConfig existingConfig = clientConfigs.stream()
                 .filter(cc -> cc.isSameConnection(config))