Hi,thanks for your reply
I think I found the cause of this situation.
Because I used some code about hiding the admin notices.
If i hide all notifications, the batch printing window will not pop up.
Maybe you will know why hiding notifications can cause this situation.
code show as below
function hide_update_noticee_to_all_but_admin_users()
{
if (is_super_admin()) {
remove_all_actions( ‘admin_notices’ );
}
}
add_action( ‘admin_head’, ‘hide_update_noticee_to_all_but_admin_users’, 1 );