diff --git a/db/dm8/maku.sql b/db/dm8/maku.sql
index 2c80357..a83f391 100644
--- a/db/dm8/maku.sql
+++ b/db/dm8/maku.sql
@@ -234,7 +234,7 @@ create table sys_menu
 
 COMMENT ON TABLE sys_menu IS '菜单管理';
 COMMENT ON COLUMN sys_menu.id IS 'id';
-COMMENT ON COLUMN sys_menu.pid IS '上级ID，一级菜单为0';
+COMMENT ON COLUMN sys_menu.pid IS '上级ID';
 COMMENT ON COLUMN sys_menu.name IS '菜单名称';
 COMMENT ON COLUMN sys_menu.url IS '菜单URL';
 COMMENT ON COLUMN sys_menu.authority IS '授权标识';
diff --git a/db/mysql/maku.sql b/db/mysql/maku.sql
index dbe95d7..a9b0972 100644
--- a/db/mysql/maku.sql
+++ b/db/mysql/maku.sql
@@ -122,7 +122,7 @@ CREATE TABLE sys_user_post
 create table sys_menu
 (
     id          bigint NOT NULL AUTO_INCREMENT COMMENT 'id',
-    pid         bigint COMMENT '上级ID，一级菜单为0',
+    pid         bigint COMMENT '上级ID',
     name        varchar(200) COMMENT '菜单名称',
     url         varchar(200) COMMENT '菜单URL',
     authority   varchar(500) COMMENT '授权标识(多个用逗号分隔，如：sys:menu:list,sys:menu:save)',
diff --git a/db/postgresql/maku.sql b/db/postgresql/maku.sql
index da3e3ab..c639ad4 100644
--- a/db/postgresql/maku.sql
+++ b/db/postgresql/maku.sql
@@ -235,7 +235,7 @@ create table sys_menu
 
 COMMENT ON TABLE sys_menu IS '菜单管理';
 COMMENT ON COLUMN sys_menu.id IS 'id';
-COMMENT ON COLUMN sys_menu.pid IS '上级ID，一级菜单为0';
+COMMENT ON COLUMN sys_menu.pid IS '上级ID';
 COMMENT ON COLUMN sys_menu.name IS '菜单名称';
 COMMENT ON COLUMN sys_menu.url IS '菜单URL';
 COMMENT ON COLUMN sys_menu.authority IS '授权标识';