这里有一个简单的WordPress重写规则来完成工作：

add_action(\'generate_rewrite_rules\', \'attachment_rewrite_rule_14924\');

function attachment_rewrite_rule_14924($wp_rewrite){
  $new_rules = array();
  $new_rules[\'attachment/(\\d*)$\'] = \'index.php?attachment_id=$matches[1]\';
  $wp_rewrite->rules = $new_rules + $wp_rewrite->rules;
}

*注：索引。php与您现有的URL结构无关。