WordPress不使用插件代码实现博客网站地图sitemap.xml的方法，需要添加伪静态规则。

在网站根目录新建一个Sitemap.php文件
文件中填入以下代码：

<?php
require('./wp-blog-header.php');
header("Content-type: text/xml");
header('HTTP/1.1 200 OK');
echo '<urlset xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"
xsi:schemaLocation="http://www.sitemaps.org/schemas/sitemap/0.9 https://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd">';
?>
<!-- generated-on=<?php echo get_lastpostdate('blog'); ?>-->
<url>
    <loc><?php echo get_home_url(); ?></loc>
    <lastmod><?php echo gmdate('Y-m-d\TH:i:s+00:00', strtotime(get_lastpostmodified('GMT'))); ?></lastmod>
    <changefreq>daily</changefreq>
    <priority>1.0</priority>
</url>
<?php
// 文章
$posts = get_posts('numberposts=-1&orderby=post_date&order=DESC');
foreach($posts as $post) :
?>
    <url>
        <loc><?php echo get_permalink($post->ID); ?></loc>
        <lastmod><?php echo str_replace(" ", "T", get_post($post->ID)->post_modified); ?>+00:00</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.6</priority>
    </url>
<?php
endforeach;
// 页面
$pages = get_pages('numberposts=-1&orderby=post_date&order=DESC');
foreach($pages as $page) :
?>
    <url>
        <loc><?php echo get_page_link($page->ID); ?></loc>
        <lastmod><?php echo str_replace(" ", "T", get_page($page->ID)->post_modified); ?>+00:00</lastmod>
        <changefreq>weekly</changefreq>
        <priority>0.6</priority>
    </url>
<?php
endforeach;
// 分类
$categorys = get_terms('category', 'orderby=name&hide_empty=0');
foreach ($categorys as $category) :
?>
    <url>
        <loc><?php echo get_term_link($category, $category->slug); ?></loc>
        <changefreq>weekly</changefreq>
        <priority>0.8</priority>
    </url>
<?php
endforeach;
// 标签
$tags = get_terms('post_tag', 'orderby=name&hide_empty=0');
foreach ($tags as $tag) :
?>
    <url>
        <loc><?php echo get_term_link($tag, $tag->slug); ?></loc>
        <changefreq>monthly</changefreq>
        <priority>0.4</priority>
    </url>
<?php
endforeach;
?>
</urlset>

伪静态

rewrite ^/Sitemap.xml$ /