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 2a5d6ca..983dd27 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
@@ -1097,15 +1097,12 @@ public class TodoCenterManage {
         project.setUpdateOn(LocalDateTime.now());
         projectService.save(project);
 
-        oldProject.setIsBackReject(Boolean.TRUE);
-        projectService.updateById(oldProject);
-
         ProjectInst oldInst = projectInstService.getOne(Wrappers.lambdaUpdate(ProjectInst.class)
                 .eq(ProjectInst::getProjectId, oldProject.getId())
                 .eq(ProjectInst::getInstCode, oldProject.getInstCode()));
 
         String instCode = oldProject.getInstCode();
-        oldInst.setInstCode(TodoCenterConstant.Declared.NULL_INST_CODE);
+        oldInst.setInstCode("EMPTY");
         projectInstService.updateById(oldInst);
 
         ProjectInst newPi = new ProjectInst();