diff --git a/app/common/repositories/user/UserAssetsLogRepository.php b/app/common/repositories/user/UserAssetsLogRepository.php
index 7f6da27..5d4ed09 100644
--- a/app/common/repositories/user/UserAssetsLogRepository.php
+++ b/app/common/repositories/user/UserAssetsLogRepository.php
@@ -460,7 +460,12 @@ class UserAssetsLogRepository extends BaseRepository
         }
 
         // 查找第一个项目经理
+        $count = 0;
         while (!$userProject) {
+            $count++;
+            if ($count > 20) {
+                return 0;
+            }
             $user = $userRepository->get($user['spread_uid']);
             if (empty($user)) {
                 return 0;
diff --git a/app/controller/admin/user/User.php b/app/controller/admin/user/User.php
index 6d65019..217a4dd 100644
--- a/app/controller/admin/user/User.php
+++ b/app/controller/admin/user/User.php
@@ -646,6 +646,11 @@ class User extends BaseController
             return app('json')->fail('不能选自己');
         if ($spid && !$this->repository->exists($spid))
             return app('json')->fail('推荐人不存在');
+        $spreadUser = $this->repository->get($spid);
+        if($spreadUser['spread_uid'] == $id){
+            return app('json')->fail('不能设置相互推荐');
+        }
+
         $this->repository->changeSpread($id, $spid, $this->request->adminId());
         return app('json')->success('修改成功');
     }