在mysql命令行中执行 SET PASSWORD FOR 'root'@'localhost' = PASSWORD('123456XXX');GRANTALLPRIVILEGESON*.*TO'root'@'%'IDENTIFIEDBY'123456XXX'WITHGRANTOPTION;flushprivileges;若以上方法行不通则用:use mysql;UPDATE user SET Password=PASSWORD('123456') where USER='root';flushprivileges;