diff --git a/lib/EmergencyService/zdxtEmergencyAppService/src/main/java/com/zdxt/app/task/UpdateDeptTask.java b/lib/EmergencyService/zdxtEmergencyAppService/src/main/java/com/zdxt/app/task/UpdateDeptTask.java
index 9016276a..eb2547ee 100644
--- a/lib/EmergencyService/zdxtEmergencyAppService/src/main/java/com/zdxt/app/task/UpdateDeptTask.java
+++ b/lib/EmergencyService/zdxtEmergencyAppService/src/main/java/com/zdxt/app/task/UpdateDeptTask.java
@@ -56,7 +56,7 @@ public class UpdateDeptTask {
         for (Dept dept : deptList) {
             List<String> ancs = new ArrayList<>();
             ancs = convertAncestors(dept, deptList, ancs);
-            ancs.add("0");
+            ancs.add(null);
             Collections.reverse(ancs);
             String anc = String.join(",", ancs);
             dept.setAncestors(anc);
@@ -67,6 +67,7 @@ public class UpdateDeptTask {
 
     private List<String> convertAncestors(Dept dept, List<Dept> deptList, List<String> ancs) {
         for (Dept tmp : deptList) {
+            if (StringUtils.isEmpty(dept.getParentId()) || StringUtils.isEmpty(dept.getDeptId())) { return ancs; }
             if (dept.getParentId().equals(tmp.getDeptId()) && !dept.getDeptId().equals(tmp.getDeptId())) {
                 ancs.add(tmp.getDeptId());
                 return convertAncestors(tmp, deptList, ancs);