[mothered]

that option was in my previous theme page navigate one ... new theme doesn't have... i did some test like revert to draft some latest post and i found the probllem is post only ....i removed 3 post blog was black to normal but when post everything gone...maybe image is causing problem or what...

I understand what you're saying.

Have you tried setting the number of posts on the main page to a lesser value, namely "5". That's the amount of posts that're displayed In every other page. Also, what happens when you publish a new post? Is It still only three on the homepage?