1。改表法。在数据库所在机器登入mysql后，更改 "mysql" 数据库里的 "user" 表里的 "host" 项，把"localhost"改称"%"

mysql -u root -p 
mysql>use mysql; 
mysql>select 'host' from user where user='root'; 
mysql>update user set host = '%' where user ='root'; 
mysql>flush privileges; 
mysql>select host,user   from user where user='root';

重起mysql服务便可完成。

2. 受权法。在数据库所在机器登入mysql后，直接进行受权

grant all privileges on . to 'root'@'%' identified by 'password' with grant option;