diff --git a/application/api/controller/Article.php b/application/api/controller/Article.php
index b125bfa..c121729 100644
--- a/application/api/controller/Article.php
+++ b/application/api/controller/Article.php
@@ -215,6 +215,9 @@ class Article extends Base
             return jsonError($rule->getError());
         }
         $article_info = $this->article_obj->where("article_id",$data['article_id'])->find();
+        if($article_info['is_buy']==0){
+            return jsonError("Unpaid");
+        }
         $journal_info = $this->journal_obj->where("journal_id",$article_info['journal_id'])->find();
         $user_info = $this->user_obj->where('user_id',$article_info['user_id'])->find();
         $editor_info = $this->user_obj->where('user_id',$article_info['editor_id'])->find();