diff --git a/pmapi/src/main/java/com/ningdatech/pmapi/todocenter/manage/TodoCenterManage.java b/pmapi/src/main/java/com/ningdatech/pmapi/todocenter/manage/TodoCenterManage.java
index 49220b8..d1be954 100644
--- a/pmapi/src/main/java/com/ningdatech/pmapi/todocenter/manage/TodoCenterManage.java
+++ b/pmapi/src/main/java/com/ningdatech/pmapi/todocenter/manage/TodoCenterManage.java
@@ -1117,8 +1117,7 @@ public class TodoCenterManage {
                 .eq(ProjectInst::getInstCode, oldProject.getInstCode()));
 
         String instCode = oldProject.getInstCode();
-        oldInst.setInstCode("EMPTY");
-        projectInstService.updateById(oldInst);
+        projectInstService.removeById(oldInst);
 
         ProjectInst newPi = new ProjectInst();
         newPi.setProjectId(project.getId());