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服务即可完成。

2. 授权法。在数据库所在机器登入mysql后，直接进行授权

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