diff --git a/cs-harmonic/cs-harmonic-boot/src/main/java/com/njcn/csharmonic/service/impl/CsEventUserPOServiceImpl.java b/cs-harmonic/cs-harmonic-boot/src/main/java/com/njcn/csharmonic/service/impl/CsEventUserPOServiceImpl.java
index 4b6a77d..9a0c923 100644
--- a/cs-harmonic/cs-harmonic-boot/src/main/java/com/njcn/csharmonic/service/impl/CsEventUserPOServiceImpl.java
+++ b/cs-harmonic/cs-harmonic-boot/src/main/java/com/njcn/csharmonic/service/impl/CsEventUserPOServiceImpl.java
@@ -97,6 +97,8 @@ public class CsEventUserPOServiceImpl extends ServiceImpl<CsEventUserPOMapper, C
         List<CsLedgerVO> data = csLedgerFeignClient.getDeviceTree().getData();
 
         List<String> collect = data.stream().map(CsLedgerVO::getChildren).
+                flatMap(Collection::stream).
+                map(CsLedgerVO::getChildren).
                 flatMap(Collection::stream).
                 map(CsLedgerVO::getChildren).
                 flatMap(Collection::stream).