第一步,

x:\>mysql -u root -p***

mysql> use mysql;

mysql> select host, user from user;    //看一下当前root用户的host设置

mysql> update user set host = ‘%’ where user = ‘root’;

mysql> select host, user from user;   //确认下root用户的host设置是否修改

mysql> flush privileges;      //使修改生效

第二部，检查防火墙3306端口