可以通过元查询来实现

$current_post_id = \'YOUR_POST_ID\';

$args = array(
    \'post_type\' => \'product\',
    \'posts_per_page\' => -1,
    \'meta_query\' => array(
        array(
            \'key\' => \'_crosssell_ids\',
            \'value\' => $current_post_id,
            \'compare\' => \'LIKE\'
        )
    )
);

$query = new WP_Query($args);

if($query->have_posts()){
    while($query->have_posts()): $query->the_post();
        $product = wc_get_product(get_the_ID());

        // Do what you want with the product.
    endwhile;
}

希望这有帮助。