diff --git a/application/project/controller/Project.php b/application/project/controller/Project.php
index 48fb54d..d6bd43d 100755
--- a/application/project/controller/Project.php
+++ b/application/project/controller/Project.php
@@ -566,9 +566,13 @@ class Project extends BasicApi
     public function positioning(){
         $member_code=Request::post('member_code');
         $positioning=Request::post('positioning');
-        // $find=Db::name('positioning')->where(['member_code'=>$member_code,'positioning'=>$positioning])->find();
-        if($member_code && $positioning){
-            Db::name('positioning')->insert(['member_code'=>$member_code,'positioning'=>$positioning,'date'=>date('Y-m-d H:i:s')]);
+        $find=Db::name('positioning')->where(['member_code'=>$member_code,'positioning'=>$positioning])->find();
+        if($find){
+            Db::name('positioning')->where(['member_code'=>$member_code,'positioning'=>$positioning])->update(['end_date'=>date('Y-m-d H:i:s')]);
+        }else{
+            if($member_code && $positioning){
+                Db::name('positioning')->insert(['member_code'=>$member_code,'positioning'=>$positioning,'date'=>date('Y-m-d H:i:s')]);
+            }
         }
         $this->success('');
     }