diff --git a/epdc-cloud-admin/src/main/java/com/elink/esua/epdc/service/impl/SysDeptServiceImpl.java b/epdc-cloud-admin/src/main/java/com/elink/esua/epdc/service/impl/SysDeptServiceImpl.java
index 4529f0f..b4997a4 100644
--- a/epdc-cloud-admin/src/main/java/com/elink/esua/epdc/service/impl/SysDeptServiceImpl.java
+++ b/epdc-cloud-admin/src/main/java/com/elink/esua/epdc/service/impl/SysDeptServiceImpl.java
@@ -135,7 +135,8 @@ public class SysDeptServiceImpl extends BaseServiceImpl<SysDeptDao, SysDeptEntit
         }
         SysDeptEntity entity = ConvertUtils.sourceToTarget(dto, SysDeptEntity.class);
         if (!entity.getAllAreaCode().isEmpty()) {
-            entity.setParentAreaCode(entity.getAllAreaCode().substring(0, entity.getAllAreaCode().lastIndexOf(",")));
+            String[] areaCodeArray = entity.getAllAreaCode().split(",");
+            entity.setParentAreaCode(areaCodeArray[areaCodeArray.length - 2]);
         }
         entity.setPids(getPidList(entity.getPid()));
         insert(entity);
@@ -164,7 +165,8 @@ public class SysDeptServiceImpl extends BaseServiceImpl<SysDeptDao, SysDeptEntit
             throw new RenException(ErrorCode.SUPERIOR_DEPT_ERROR);
         }
         if (!entity.getAllAreaCode().isEmpty()) {
-            entity.setParentAreaCode(entity.getAllAreaCode().substring(0, entity.getAllAreaCode().lastIndexOf(",")));
+            String[] areaCodeArray = entity.getAllAreaCode().split(",");
+            entity.setParentAreaCode(areaCodeArray[areaCodeArray.length - 2]);
         }
         entity.setPids(getPidList(entity.getPid()));