diff --git a/event_smart/src/main/java/com/njcn/gather/event/devcie/mapper/mapping/PqDeviceMapper.xml b/event_smart/src/main/java/com/njcn/gather/event/devcie/mapper/mapping/PqDeviceMapper.xml
index b041b537..e577f06f 100644
--- a/event_smart/src/main/java/com/njcn/gather/event/devcie/mapper/mapping/PqDeviceMapper.xml
+++ b/event_smart/src/main/java/com/njcn/gather/event/devcie/mapper/mapping/PqDeviceMapper.xml
@@ -39,7 +39,6 @@
     PQ_SUBSTATION.name stationName,
     PQ_GDINFORMATION.Name gdName
     from
-    PQ_SUBVOLTAGE,
     pq_device,
     PQ_SUBSTATION,
     PQ_GDINFORMATION