先停止所有mysql有关进程。
sudo rm /usr/local/mysql
sudo rm -rf /usr/local/mysql*
sudo rm -rf /library/startupitems/mysqlcom
sudo rm -rf /library/preferencepanes/my*
vim /etc/hostconfig and removed the line mysqlcom=-yes-
rm -rf ~/library/preferencepanes/my*
sudo rm -rf /library/receipts/mysql*
sudo rm -rf /library/receipts/mysql*
sudo rm -rf /var/db/receipts/com.mysql.*最后这条很多文章都丢了，切记切记。