1.mysqladminĿ¼
ʽ£УUSERΪûPASSWORDΪ룩 
mysqladmin -u USER -p password PASSWORD
֮ʾԭ룬ȷ󼴿޸ġ
磬rootûΪ123456 
mysqladmin -u root -p password 123456

2.UPDATE user 䣨Ŀ¼
ַʽrootʻmysqlȻִУ 
UPDATE user SET password=PASSWORD('123456') WHERE user='root';
FLUSH PRIVILEGES;

3.SET PASSWORD 䣨Ŀ¼
ַʽҲҪrootmysqlȻִУ 
SET PASSWORD FOR root=PASSWORD('123456');

4.root붪ʧĿ¼
ʹ MySQL Դһ"MySQL GUI Tools"һֱõ5.0汾ġ ڰװĿ¼һ MySQLSystemTrayMonitor.exeϵͳ̻ͼꡣMySQLδװ򲻻֣ͨAction>Manage MySQL Instances úͰװѾװҼ󣬻"Configure Instance"Ĳ˵MySQL Administratorڣ 
ԭķö£ѡбеġӦҲǩѡ񡰰ȫѡgrantȻӦøġ 
صġơҲӦġʼ/ֹͣ񡱱ǩ񡣴ʱmysqlѾҪûˣ޸root롣