diff --git a/src/main/resources/sql/data.sql b/src/main/resources/sql/data.sql
index 6289532..93e59ec 100644
--- a/src/main/resources/sql/data.sql
+++ b/src/main/resources/sql/data.sql
@@ -139,8 +139,8 @@ VALUES (1, 3, 7),
 
 INSERT INTO `comment` (`co_id`, `co_page_path`, `co_content`, `co_date`, `co_status`, `co_pid`, `co_from_author_id`,
                        `co_to_author_id`)
-VALUES (1, '/a', 'test comment', '2020-05-22 23:57:17', 0, -1, 1, -1),
-       (2, '/a', 'test comment', '2020-05-22 23:57:31', 0, -1, 1, 1);
+VALUES (1, '/a', 'test comment', '2020-05-22 23:57:17', 0, -1, 1, null),
+       (2, '/a', 'test comment', '2020-05-22 23:57:31', 0, -1, 1, null);
 
 
 
diff --git a/src/main/resources/sql/schema.sql b/src/main/resources/sql/schema.sql
index c14d7ff..d755609 100644
--- a/src/main/resources/sql/schema.sql
+++ b/src/main/resources/sql/schema.sql
@@ -74,7 +74,9 @@ CREATE TABLE `comment`
     `co_status`         tinyint                         not null default 0 comment '评论的状态',
     `co_pid`            bigint                          not null default -1 comment '评论/留言的父id',
     `co_from_author_id` int                             not null comment '留言者id',
-    `co_to_author_id`   int                                      default null comment '父评论的作者id'
+    `co_to_author_id`   int                                      default null comment '父评论的作者id',
+    foreign key (co_from_author_id) references user (u_id),
+    foreign key (co_to_author_id) references user (u_id)
 ) DEFAULT CHARSET = utf8mb4
   COLLATE utf8mb4_general_ci,comment '评论/留言表';