mysql> use mysql;Database changedmysql> grant all privileges on *.* to root@'%' identified by "password";可以指定某一个数据库grant all privileges on 数据库.表 to root@'%' identified by "指定的密码";grant all privileges on your_db.* to root@'%' identified by "password";your_db的所有表Query OK, 0 rows affected (0.00 sec)mysql> flush privileges;Query OK, 0 rows affected (0.00 sec)mysql> select host,user,password from user;+--------------+------+-------------------------------------------+| host | user | password |+--------------+------+-------------------------------------------+| localhost | root | *A731AEBFB621E354CD41BAF207D884A609E81F5E || 192.168.1.1 | root | *A731AEBFB621E354CD41BAF207D884A609E81F5E || % | root | *A731AEBFB621E354CD41BAF207D884A609E81F5E |+--------------+------+-------------------------------------------+3 rows in set (0.00 sec)