For many wordpress users, there are so many comment spam everyday, if he does not use some plugins to due with them( such as Akismet, etc). He must be very angry about these spams.

If you want to delete or manage these comment spam, refer to:

How to Activate and Manage Akismet Plugin

If you want to delete these comment spam quickly, just follow this:

1. Log in MySQL by PHPMyadmin or another MySQL manager.

2. Locate the database of your wordpress, and click the table wp_comments. If you have another prefix, please change it.

3. Excute this syntax, you can choose one for your requirements:

DELETE * FROM  wp_comments WHERE  comment_approved = 'spam';

DELETE * FROM  wp_comments WHERE  comment_approved = '0';

Note: the first syntax will delete all the comment spam quickly, the next will delete all the waiting-approved comments.

4. Okay, Finished, refresh your comments manager windows in WordPress panel, you will find all the spams disappeared.