diff --git a/src/com/engine/organization/entity/department/bo/DepartmentBO.java b/src/com/engine/organization/entity/department/bo/DepartmentBO.java
index 7835aca5..668b35c7 100644
--- a/src/com/engine/organization/entity/department/bo/DepartmentBO.java
+++ b/src/com/engine/organization/entity/department/bo/DepartmentBO.java
@@ -138,7 +138,7 @@ public class DepartmentBO {
             tree.setIsParent(false);
             tree.setIsVirtual("0");
             tree.setName(item.getDepartmentName());
-            tree.setPid(item.getSupDepId().toString());
+            tree.setPid(null == item.getSupDepId() ? "0" : item.getSupDepId().toString());
             tree.setSelected(false);
             tree.setType("2");
             tree.setParentComp(item.getSubCompanyId1().toString());