楼主是不是从0.4版本升级到0.6版本，升级到0.5部分SQL没有执行，再执行一下以下的SQL，错误的行则跳过。 ALTER TABLE `aws_invitation` DROP `object_type`; ALTER TABLE `aws_invitation` DROP `object_id`; DROP TABLE `aws_users_apply`; DROP TABLE `aws_admin_menu`; ALTER TABLE `aws_system_setting` DROP `desc`,DROP `detail`,DROP `groupid`,DROP `sort`,DROP `type`,DROP `status`; INSERT INTO `aws_system_setting` (`varname`, `value`) VALUES ('db_version', ''), ('statistic_code', 's:0:"";'), ('upload_enable', 's:1:"Y";'), ('answer_length_lower', 's:1:"0";'), ('quick_publish', 's:1:"Y";'), ('invite_reg_only', 's:1:"N";'), ('question_title_limit', 's:3:"100";'); CREATE TABLE `aws_question_comments` ( `id` int(11) unsigned NOT NULL AUTO_INCREMENT, `question_id` int(11) DEFAULT '0', `uid` int(11) DEFAULT '0', `message` varchar(255) DEFAULT NULL, `time` int(10) DEFAULT NULL, PRIMARY KEY (`id`), KEY `question_id` (`question_id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8; ALTER TABLE `aws_users` ADD `level` TINYINT( 3 ) NULL DEFAULT '0' COMMENT '用户声望级别' AFTER `admin_id`; CREATE TABLE IF NOT EXISTS `aws_users_group` ( `group_id` int(11) NOT NULL AUTO_INCREMENT, `type` tinyint(3) DEFAULT '0', `group_name` varchar(50) NOT NULL, `reputation_lower` int(11) DEFAULT '0', `reputation_higer` int(11) DEFAULT '0', `stars` tinyint(3) DEFAULT '0', PRIMARY KEY (`group_id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8; INSERT INTO `aws_users_group` (`group_id`, `type`, `group_name`, `reputation_lower`, `reputation_higer`, `stars`) VALUES (1, 0, '初级会员', 0, 10, 0), (2, 0, 'VIP_1', 10, 50, 1), (3, 0, 'VIP_2', 50, 200, 2), (4, 0, 'VIP_3', 200, 500, 3), (5, 0, 'VIP_4', 500, 1000, 4), (6, 0, 'VIP_5', 1000, 99999, 5);