您可以使用“pre\\u get\\u posts”过滤器挂钩并更改搜索查询。

function wpse_search_filter( $query ) {
    if ( $query->is_search ) {
        $query->set( \'post_type\', array(\'product\') ); // setting post type as product (for woocommerce only)
    }
    return $query;
}
add_filter(\'pre_get_posts\',\'wpse_search_filter\');