why google only index my home page?

google index

[laokboke]

I build my site with wordpress,a few days ago,after i posted,google index my post immediately,and my post ranked first in the results when i searched by google with full title of my post.

But it did not last long,recently,i found that google only indexed my home page after i posted,and i searched by google with full title of my post,i couldn't found the post but my home page

Is there someone can help me?Thanks

[rogerd]

Have you tried a site: search to see if it's a ranking issue or if the pages aren't indexed at all, i.e., you really have just one page in Google?

One thing to check: be sure you don't have a noindex or nofollow robots tag on your posts. On one WP install, I upgraded a theme and didn't realize that the new version had some new SEO features, and that the default robots meta tag was set to nofollow.