diff --git a/database/wheeldb.sql b/database/wheeldb.sql
index 973c6abd..67edf2e8 100644
--- a/database/wheeldb.sql
+++ b/database/wheeldb.sql
@@ -81,6 +81,7 @@ CREATE TABLE `t_chip` (
   `account_id` varchar(60) CHARACTER SET utf8 NOT NULL DEFAULT '' COMMENT 'accountid',
   `item_id` int(11) NOT NULL DEFAULT '0' COMMENT '道具id',
   `item_num` int(11) NOT NULL DEFAULT '0' COMMENT '道具数量',
+  `expiretime` int(11) NOT NULL DEFAULT '0' COMMENT '过期时间',
   `createtime` int(11) NOT NULL DEFAULT '0' COMMENT '创建时间',
   `modifytime` int(11) NOT NULL DEFAULT '0' COMMENT '修改时间',
   KEY `idx_account_id` (`account_id`),