diff --git a/app/Http/Controllers/Mobile/UserController.php b/app/Http/Controllers/Mobile/UserController.php
index 0572133..0d00a05 100755
--- a/app/Http/Controllers/Mobile/UserController.php
+++ b/app/Http/Controllers/Mobile/UserController.php
@@ -599,6 +599,9 @@ class UserController extends CommonController
             return $this->fail([ResponseCode::ERROR_BUSINESS, '未报名课程']);
         }
         $user = User::where('mobile', $all['mobile'])->first();
+        if (empty($user)) {
+            return $this->fail([ResponseCode::ERROR_BUSINESS, '用户不存在']);
+        }
         $list = CourseContentCheck::where('course_id', $all['course_id'])
             ->where(function ($query) use ($all) {
                 if (isset($all['course_content_id'])) {