diff --git a/doc/db.md b/doc/db.md
index 041981c..e383751 100644
--- a/doc/db.md
+++ b/doc/db.md
@@ -7,6 +7,7 @@ CREATE TABLE `ea_user` (
   `mobile` varchar(20) COLLATE utf8mb4_unicode_ci NOT NULL DEFAULT '' COMMENT '用户手机号',
   `password` varchar(140) COLLATE utf8mb4_unicode_ci NOT NULL DEFAULT '' COMMENT '用户密码',
   `nick_name` varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL DEFAULT '' COMMENT '用户昵称',
+  `salt` varchar(30) COLLATE utf8mb4_unicode_ci NOT NULL DEFAULT '' COMMENT '盐值',
   `avatar` varchar(120) COLLATE utf8mb4_unicode_ci  NOT NULL DEFAULT '' COMMENT '头像文件',
   `gender` tinyint(3) unsigned NOT NULL DEFAULT '0' COMMENT '性别',
   `country` varchar(50) COLLATE utf8mb4_unicode_ci NOT NULL DEFAULT '' COMMENT '国家',