diff --git a/nursing-unit-iot/nu-iot-biz/src/main/java/com/nu/modules/manager/controller/DeviceManagerController.java b/nursing-unit-iot/nu-iot-biz/src/main/java/com/nu/modules/manager/controller/DeviceManagerController.java
index be89918b..7bf33ca1 100644
--- a/nursing-unit-iot/nu-iot-biz/src/main/java/com/nu/modules/manager/controller/DeviceManagerController.java
+++ b/nursing-unit-iot/nu-iot-biz/src/main/java/com/nu/modules/manager/controller/DeviceManagerController.java
@@ -127,8 +127,7 @@ public class DeviceManagerController extends JeecgController<DeviceManager, IDev
     */
    @RequestMapping(value = "/edit", method = {RequestMethod.PUT,RequestMethod.POST})
    public Result<String> edit(@RequestBody DeviceManager deviceManager) {
-       service.updateManager(deviceManager);
-       return Result.OK("编辑成功!");
+       return service.updateManager(deviceManager);
    }
    
    /**
diff --git a/nursing-unit-iot/nu-iot-biz/src/main/java/com/nu/modules/manager/entity/DeviceManager.java b/nursing-unit-iot/nu-iot-biz/src/main/java/com/nu/modules/manager/entity/DeviceManager.java
index 68b2ffda..00abb133 100644
--- a/nursing-unit-iot/nu-iot-biz/src/main/java/com/nu/modules/manager/entity/DeviceManager.java
+++ b/nursing-unit-iot/nu-iot-biz/src/main/java/com/nu/modules/manager/entity/DeviceManager.java
@@ -52,5 +52,7 @@ public class DeviceManager implements Serializable {
     private String onlineStatus;//在线状态
     private String deviceStatus;//设备状态
     private Integer ywId;//运维ID
+    @TableField(exist = false)
+    private String deviceIndex;
 
 }
diff --git a/nursing-unit-iot/nu-iot-biz/src/main/java/com/nu/modules/manager/mapper/DeviceManagerMapper.java b/nursing-unit-iot/nu-iot-biz/src/main/java/com/nu/modules/manager/mapper/DeviceManagerMapper.java
index 699a7bfd..f78b4b4a 100644
--- a/nursing-unit-iot/nu-iot-biz/src/main/java/com/nu/modules/manager/mapper/DeviceManagerMapper.java
+++ b/nursing-unit-iot/nu-iot-biz/src/main/java/com/nu/modules/manager/mapper/DeviceManagerMapper.java
@@ -22,6 +22,7 @@ import java.util.List;
 public interface DeviceManagerMapper extends BaseMapper<DeviceManager> {
     IPage<DeviceManager> findPage(Page<DeviceManager> page, @Param("params") DeviceManager deviceManager);
     IPage<DeviceManager> findAllPage(Page<DeviceManager> page, @Param("params") DeviceManager deviceManager);
+    DeviceManager findBySn(DeviceManager deviceManager);
     IPage<DeviceBindLog> findBingLogPage(Page<DeviceBindLog> page, @Param("params") DeviceBindLog deviceBindLog);
     void addLog(DeviceBindLog deviceBindLog);
     List<DeviceManager> queryNuList(DeviceManager deviceManager);
diff --git a/nursing-unit-iot/nu-iot-biz/src/main/java/com/nu/modules/manager/mapper/xml/DeviceManagerMapper.xml b/nursing-unit-iot/nu-iot-biz/src/main/java/com/nu/modules/manager/mapper/xml/DeviceManagerMapper.xml
index 7f0f9cde..f6c38450 100644
--- a/nursing-unit-iot/nu-iot-biz/src/main/java/com/nu/modules/manager/mapper/xml/DeviceManagerMapper.xml
+++ b/nursing-unit-iot/nu-iot-biz/src/main/java/com/nu/modules/manager/mapper/xml/DeviceManagerMapper.xml
@@ -18,24 +18,29 @@
             a.remarks,
             a.device_status,
             ifnull(t.online_status,'待集成') as online_status,
-            a.yw_id
+            a.yw_id,
+            t.device_index
         from nu_iot_device_preview a
         left join nu_base_info c on a.nu_id = c.nu_id
         left join (
             select mac as sn,
-            ( case device_status when '0' then '离线' when '1' then '在线' end ) as online_status
+            ( case device_status when '0' then '离线' when '1' then '在线' end ) as online_status,
+            device_index
             from nu_iot_tplink_camera
             union all
             select sn,
-            ( case relay_state when '0' then '离线' else '在线' end ) as online_status
+            ( case relay_state when '0' then '离线' else '在线' end ) as online_status,
+            '' as device_index
             from nu_iot_ds_electricity_meter
             union all
             select cid as sn,
-            ( case relay_state when '0' then '离线' else '在线' end ) as online_status
+            ( case relay_state when '0' then '离线' else '在线' end ) as online_status,
+            '' as device_index
             from nu_iot_tq_water_meter
             union all
             select sn,
-            ( case status when '0' then '在线' else '离线' end ) as online_status
+            ( case status when '0' then '在线' else '离线' end ) as online_status,
+            '' as device_index
             from nu_iot_yiweilian_humid_device
         ) t on a.sn = t.sn
         where a.sn is not null
@@ -77,6 +82,24 @@
         order by a.dimension,a.device_type,a.device_model,a.sn
     </select>
 
+    <select id="findBySn" parameterType="com.nu.modules.manager.entity.DeviceManager" resultType="com.nu.modules.manager.entity.DeviceManager">
+        select
+            a.id,
+            a.dimension,
+            a.device_name,
+            a.device_type,
+            a.device_model,
+            a.factory,
+            a.sn,
+            a.create_time,
+            a.update_time,
+            a.remarks,
+            a.device_status,
+            a.yw_id
+            from nu_iot_device_preview a
+        where a.sn = #{sn}
+    </select>
+
     <select id="findBingLogPage" parameterType="com.nu.modules.manager.entity.DeviceBindLog" resultType="com.nu.modules.manager.entity.DeviceBindLog">
         select
             id,
diff --git a/nursing-unit-iot/nu-iot-biz/src/main/java/com/nu/modules/manager/service/IDeviceManagerService.java b/nursing-unit-iot/nu-iot-biz/src/main/java/com/nu/modules/manager/service/IDeviceManagerService.java
index aed23975..a6d4d062 100644
--- a/nursing-unit-iot/nu-iot-biz/src/main/java/com/nu/modules/manager/service/IDeviceManagerService.java
+++ b/nursing-unit-iot/nu-iot-biz/src/main/java/com/nu/modules/manager/service/IDeviceManagerService.java
@@ -9,6 +9,7 @@ import com.nu.modules.tplink.camera.entity.CameraInfo;
 import com.nu.modules.tq.electricity.entity.ElectricityMeter;
 import com.nu.modules.tq.water.entity.WaterMeter;
 import com.nu.modules.yiweilian.humid.entity.HumidDevice;
+import org.jeecg.common.api.vo.Result;
 
 import java.util.List;
 import java.util.Map;
@@ -23,7 +24,7 @@ public interface IDeviceManagerService extends IService<DeviceManager> {
     IPage<DeviceManager> findPage(Page<DeviceManager> page, DeviceManager deviceManager);
     IPage<DeviceManager> findAllPage(Page<DeviceManager> page, DeviceManager deviceManager);
     IPage<DeviceBindLog> findBingLogPage(Page<DeviceBindLog> page, DeviceBindLog deviceBindLog);
-    void updateManager(DeviceManager deviceManager);
+    Result<String> updateManager(DeviceManager deviceManager);
     void addLog(DeviceBindLog deviceBindLog);
     List<DeviceManager> queryNuList(DeviceManager deviceManager);
 
diff --git a/nursing-unit-iot/nu-iot-biz/src/main/java/com/nu/modules/manager/service/impl/DeviceManagerServiceImpl.java b/nursing-unit-iot/nu-iot-biz/src/main/java/com/nu/modules/manager/service/impl/DeviceManagerServiceImpl.java
index 72eac10d..9702ae9e 100644
--- a/nursing-unit-iot/nu-iot-biz/src/main/java/com/nu/modules/manager/service/impl/DeviceManagerServiceImpl.java
+++ b/nursing-unit-iot/nu-iot-biz/src/main/java/com/nu/modules/manager/service/impl/DeviceManagerServiceImpl.java
@@ -16,6 +16,7 @@ import com.nu.modules.tq.water.entity.WaterMeter;
 import com.nu.modules.yiweilian.humid.entity.HumidDevice;
 import com.nu.utils.RabbitMQUtil;
 import lombok.extern.slf4j.Slf4j;
+import org.jeecg.common.api.vo.Result;
 import org.jeecg.common.system.api.ISysBaseAPI;
 import org.springframework.beans.BeanUtils;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -56,12 +57,17 @@ public class DeviceManagerServiceImpl extends ServiceImpl<DeviceManagerMapper, D
     }
 
     @Override
-    public void updateManager(DeviceManager deviceManager){
+    public Result<String> updateManager(DeviceManager deviceManager){
+        DeviceManager entity = baseMapper.findBySn(deviceManager);
+        if(entity!=null){
+            return Result.error("编辑失败，设备标识已存在！");
+        }
         baseMapper.updateById(deviceManager);
         //同步给运维平台
         DevicePreviewMqDto dto = new DevicePreviewMqDto();
         BeanUtils.copyProperties(deviceManager, dto);
         rabbitMQUtil.sendToExchange("hldy.iotsyncbiz", "iotsyncbiz.editpreviewsn", dto);
+        return Result.OK("编辑成功！");
     }
 
     @Override