Q:

How can add image in wordpress custom post? 

How can add image in wordpress custom post?  please any one help me....
Thanks in advance. 

A:

You mean a post featured image? 
In the functions file for your theme you need to turn support on for the post types you have
You may already have a line that looks like this, just as your postype in the array. 
add_theme_support('post-thumbnails', array('post', 'page', 'CUSTOM_POST_TYPE_HERE'));

