原因是mysql帐号默认不允许从远程登陆，只能在localhost。 授权法： 1，你想myuser使用mypassword从任何主机连接到mysql服务器的话。 GRANT ALL PRIVILEGES ON *.* TO 'myuser'@'%' IDENTIFIED BY 'mypassword' WITH GRANT OPTION; FLUSH PRIVILEGES; 2，如果你想允许用户myuser从ip为192.168.1.6的主机连接到mysql服务器，并使用mypassword作为密码 GRANT ALL PRIVILEGES ON *.* TO 'myuser'@'192.168.1.3' IDENTIFIED BY 'mypassword' WITH GRANT OPTION; FLUSH PRIVILEGES; 3，如果你想允许用户myuser从ip为192.168.1.6的主机连接到mysql服务器的dk数据库，并使用mypassword作为密码 GRANT ALL PRIVILEGES ON dk.* TO 'myuser'@'192.168.1.3' IDENTIFIED BY 'mypassword' WITH GRANT OPTION; FLUSH PRIVILEGES; 4，赋予任何主机访问数据的权限 GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' WITH GRANT OPTION ； FLUSH PRIVILEGES ；