wp_list_categories 就是你想要的。它需要taxonomy 作为可选参数。

抄本示例：

<?php 

$taxonomy     = \'genre\';
$orderby      = \'name\'; 
$show_count   = 0;      // 1 for yes, 0 for no
$pad_counts   = 0;      // 1 for yes, 0 for no
$hierarchical = 1;      // 1 for yes, 0 for no
$title        = \'\';

$args = array(
  \'taxonomy\'     => $taxonomy,
  \'orderby\'      => $orderby,
  \'show_count\'   => $show_count,
  \'pad_counts\'   => $pad_counts,
  \'hierarchical\' => $hierarchical,
  \'title_li\'     => $title
);
?>

<ul>
<?php wp_list_categories( $args ); ?>
</ul>