#1045 - Access denied for user 'root'@'localhost' (using password: YES)的错误显示是怎么回事该怎么办

#1045 - Access denied for user 'root'@'localhost' (using password: YES)
这个问题该怎么做，请帮忙仔细给写一下，怎么办能让他不出上面的这个语句？谢谢回答.