sudo systemctl stop mysql sudo mysqld_safe --skip-grant-tables & mysql -uroot > FLUSH PRIVILEGES; MySQL 5.7.6+ MariaDB 10.1.20+ > ALTER USER 'root'@'localhost' IDENTIFIED BY ' 新密碼 '; MySQL 5.7.5- MariaDB 10.1.20- > SET PASSWORD FOR 'root'@'localhost' = PASSWORD(' 新密碼 '); sudo kill `cat /var/run/mysqld/mysqld.pid` sudo systemctl stop mysql sudo systemctl start mysql mysql -u root -p 輸入新密碼 For Fun