diff --git a/securitycontrol-model/securitycontrol-background/src/main/java/com/securitycontrol/background/service/impl/DeviceOfBdServiceImpl.java b/securitycontrol-model/securitycontrol-background/src/main/java/com/securitycontrol/background/service/impl/DeviceOfBdServiceImpl.java
index b5569e8..4ab4b2a 100644
--- a/securitycontrol-model/securitycontrol-background/src/main/java/com/securitycontrol/background/service/impl/DeviceOfBdServiceImpl.java
+++ b/securitycontrol-model/securitycontrol-background/src/main/java/com/securitycontrol/background/service/impl/DeviceOfBdServiceImpl.java
@@ -218,7 +218,7 @@ public class DeviceOfBdServiceImpl implements IDeviceOfBdService {
             }
             int result = mapper.isBdDeviceDetailExist(vo);
             if (result > 0) {
-                return AjaxResult.error("检测不能重复");
+                return AjaxResult.error("检测名称不能重复");
             }
             if (StringUtils.isEmpty(vo.getId())) {
                 String id = IdUtils.getuid();
diff --git a/securitycontrol-model/securitycontrol-background/src/main/resources/mapper/DeviceBdMapper.xml b/securitycontrol-model/securitycontrol-background/src/main/resources/mapper/DeviceBdMapper.xml
index 43ea6ba..826ed18 100644
--- a/securitycontrol-model/securitycontrol-background/src/main/resources/mapper/DeviceBdMapper.xml
+++ b/securitycontrol-model/securitycontrol-background/src/main/resources/mapper/DeviceBdMapper.xml
@@ -169,11 +169,7 @@
             </trim>
         </if>
         <if test="type == 2">
-            UPDATE tb_device_value
-            <set>
-                <if test="unit != null and unit != ''">unit = #{unit},</if>
-            </set>
-            WHERE attribute_id = #{id}
+            UPDATE tb_device_value SET unit = #{unit} WHERE attribute_id = #{id}
         </if>
     </insert>
     <!--删除边带设备-->
@@ -274,6 +270,7 @@
                 )
             </if>
         </where>
+        ORDER BY tbd.create_time DESC
     </select>
     <!--边带设备编码是否重复-->
     <select id="isDeviceCodeExist" resultType="java.lang.Integer">