diff --git a/app/Http/Controllers/Admin/CourseSignController.php b/app/Http/Controllers/Admin/CourseSignController.php
index 25fdbc7..6b62f1c 100755
--- a/app/Http/Controllers/Admin/CourseSignController.php
+++ b/app/Http/Controllers/Admin/CourseSignController.php
@@ -584,6 +584,7 @@ class CourseSignController extends BaseController
      *     @OA\Parameter(name="reason", in="query", @OA\Schema(type="string"), required=false, description="备注"),
      *     @OA\Parameter(name="score", in="query", @OA\Schema(type="integer"), required=false, description="分数"),
      *     @OA\Parameter(name="file_ids", in="query", @OA\Schema(type="string"), required=false, description="文件id数组，JSON格式字符串或英文逗号分隔的字符串"),
+     *     @OA\Parameter(name="giveup_reason", in="query", @OA\Schema(type="string"), required=false, description="放弃原因"),
      *     @OA\Parameter(name="token", in="query", @OA\Schema(type="string"), required=true, description="token"),
      *     @OA\Response(
      *      response="200",
@@ -643,6 +644,11 @@ class CourseSignController extends BaseController
                     }
                 }
 
+                // 更新 giveup_reason 放弃原因
+                if (isset($all['giveup_reason'])) {
+                    $model->giveup_reason = $all['giveup_reason'];
+                }
+
                 $model->save();
                 if ($model->status == 1) {
                     Notification::send(User::find($model->user_id), new AuditNotify($data));