您需要截取WordPress生成的链接，并将查询变量附加到相关URL上。

你可以很容易地做到这一点，在类别URL上使用一个过滤器，比如。。。

function add_my_query_var( $link ) {
    $link = add_query_arg( \'sort\', \'most_voted\', $link );
    return $link;
}
add_filter(\'category_link\',\'add_my_query_var\');

add_filter(\'page_link\',\'add_my_query_var\');
add_filter(\'post_link\',\'add_my_query_var\');
add_filter(\'term_link\',\'add_my_query_var\');
add_filter(\'tag_link\',\'add_my_query_var\');
add_filter(\'category_link\',\'add_my_query_var\');
add_filter(\'post_type_link\',\'add_my_query_var\');
add_filter(\'attachment_link\',\'add_my_query_var\');
add_filter(\'year_link\',\'add_my_query_var\');
add_filter(\'month_link\',\'add_my_query_var\');
add_filter(\'day_link\',\'add_my_query_var\');
add_filter(\'search_link\',\'add_my_query_var\');

add_filter(\'feed_link\',\'add_my_query_var\');
add_filter(\'post_comments_feed_link\',\'add_my_query_var\');
add_filter(\'author_feed_link\',\'add_my_query_var\');
add_filter(\'category_feed_link\',\'add_my_query_var\');
add_filter(\'taxonomy_feed_link\',\'add_my_query_var\');
add_filter(\'search_feed_link\',\'add_my_query_var\');

add_filter(\'get_edit_tag_link\',\'add_my_query_var\');
add_filter(\'get_edit_post_link\',\'add_my_query_var\');
add_filter(\'get_delete_post_link\',\'add_my_query_var\');
add_filter(\'get_edit_comment_link\',\'add_my_query_var\');
add_filter(\'get_edit_bookmark_link\',\'add_my_query_var\');

add_filter(\'index_rel_link\',\'add_my_query_var\');
add_filter(\'parent_post_rel_link\',\'add_my_query_var\');
add_filter(\'previous_post_rel_link\',\'add_my_query_var\');
add_filter(\'next_post_rel_link\',\'add_my_query_var\');
add_filter(\'start_post_rel_link\',\'add_my_query_var\');
add_filter(\'end_post_rel_link\',\'add_my_query_var\');

add_filter(\'previous_post_link\',\'add_my_query_var\');
add_filter(\'next_post_link\',\'add_my_query_var\');

add_filter(\'get_pagenum_link\',\'add_my_query_var\');
add_filter(\'get_comments_pagenum_link\',\'add_my_query_var\');
add_filter(\'shortcut_link\',\'add_my_query_var\');
add_filter(\'get_shortlink\',\'add_my_query_var\');

add_filter(\'home_url\',\'add_my_query_var\');
add_filter(\'site_url\',\'add_my_query_var\');
add_filter(\'admin_url\',\'add_my_query_var\');
add_filter(\'includes_url\',\'add_my_query_var\');
add_filter(\'content_url\',\'add_my_query_var\');
add_filter(\'plugins_url\',\'add_my_query_var\');

add_filter(\'network_site_url\',\'add_my_query_var\');
add_filter(\'network_home_url\',\'add_my_query_var\');
add_filter(\'network_admin_url\',\'add_my_query_var\');