diff --git a/dongjian-dashboard-back-dao/src/main/resources/mappers/ex/DeviceInfoMapperExt.xml b/dongjian-dashboard-back-dao/src/main/resources/mappers/ex/DeviceInfoMapperExt.xml
index e1a4acf..89981bb 100644
--- a/dongjian-dashboard-back-dao/src/main/resources/mappers/ex/DeviceInfoMapperExt.xml
+++ b/dongjian-dashboard-back-dao/src/main/resources/mappers/ex/DeviceInfoMapperExt.xml
@@ -74,7 +74,7 @@
                 drr.receive_ts
             </when>
             <otherwise>
-                device_info.id
+                drr.receive_ts
             </otherwise>
         </choose>
         <choose>
@@ -177,7 +177,7 @@
                 bss.latest_ts
             </when>
             <otherwise>
-                device_info.id
+                bss.latest_ts
             </otherwise>
         </choose>
         <choose>