你还是要利用pre_get_posts 在主查询实际运行之前更改主查询查询变量。博客页面/主页可以通过is_home() 条件标记

add_action( \'pre_get_posts\', function ( $q )
{
    if (    is_home() // Only targets the home/blog page
         && $q->is_main_query() // Only targets the main query
    ) {
        // Works on build in taxonomy category, for custom taxonomies, use a tax_query
        $q->set( \'cat\', -1 ); // Change with correct category ID, minus sign means remove
    }
}, PHP_MAX_INT ):