diff --git a/application/api/model/Sign.php b/application/api/model/Sign.php
index 7bf04b7..0c098cf 100644
--- a/application/api/model/Sign.php
+++ b/application/api/model/Sign.php
@@ -206,7 +206,7 @@ class Sign extends Model
                 $is_sign = db::name('vs_user_sign')->where(['sign_user_id' => $sign_user_id,'end_time' => ['>',time()]])->find();
                 if($is_sign){
                     $sign_user_type = 2;
-                    $before_sign_user = $is_sign['user_id'];
+                    $before_sign_user = $is_sign['parent_user_id'];
                 }
                 $sign_times = get_system_config_value('sign_times');
             }