diff --git a/pmapi/src/main/java/com/ningdatech/pmapi/gov/manage/GovProjectCollectionManage.java b/pmapi/src/main/java/com/ningdatech/pmapi/gov/manage/GovProjectCollectionManage.java
index ba8fc9d..33d27e7 100644
--- a/pmapi/src/main/java/com/ningdatech/pmapi/gov/manage/GovProjectCollectionManage.java
+++ b/pmapi/src/main/java/com/ningdatech/pmapi/gov/manage/GovProjectCollectionManage.java
@@ -409,6 +409,7 @@ public class GovProjectCollectionManage {
         saveBase.setIsEffective(BizProjectContant.ProjectCollection.IS_EFFECTIVE);
         if(Objects.nonNull(oldBaseInfo)){
             saveBase.setId(oldBaseInfo.getId());
+            saveBase.setBaseAreaCode(null);
         }else{
             saveBase.setTongTime(LocalDateTime.now());
             saveBase.setBaseAreaCode(baseAreaCode);