1.停止MySQL的服务sudo /Library/StartupItems/MySQLCOM/MySQLCOM stop 2.cd /usr/local/mysql/bin./mysqld_safe –skip-grant-table 3.新开个终端也是进入到mysql/bin目录./mysql -u root mysqluse mysql;UPDATE user SET Password=PASSWORD(‘root’) where USER=’root’;FLUSH PRIVILEGES; 退出 重启服务sudo /Library/StartupItems/MySQLCOM/MySQLCOM restart