diff --git a/core/core.php b/core/core.php
index de07f2a..9a14a27 100644
--- a/core/core.php
+++ b/core/core.php
@@ -71,6 +71,12 @@ function themeInit($self)
                 break;
         };
     }
+
+    /* 增加自定义sitemap功能 */
+    if ($self->request->getRequestUri() == "/sitemap.xml" || $self->request->getRequestUri() == "/index.php/sitemap.xml") {
+        $self->setThemeFile("library/sitemap.php");
+        $self->response->setStatus(200);
+    }
 }
 
 /* 增加自定义字段 */
diff --git a/core/function.php b/core/function.php
index 1c4b85f..5177067 100644
--- a/core/function.php
+++ b/core/function.php
@@ -3,7 +3,7 @@
 /* 获取主题当前版本号 */
 function _getVersion()
 {
-    return "5.1.9";
+    return "5.2.0";
 };
 
 /* 判断是否是手机 */
diff --git a/functions.php b/functions.php
index d20bbf7..2ae7669 100644
--- a/functions.php
+++ b/functions.php
@@ -195,7 +195,8 @@ function themeConfig($form)
     $JFooter_Right = new Typecho_Widget_Helper_Form_Element_Textarea(
         'JFooter_Right',
         NULL,
-        '<a href="https://as.js.cn/feed/" target="_blank" rel="noopener noreferrer">RSS</a>',
+        '<a href="https://as.js.cn/feed/" target="_blank" rel="noopener noreferrer">RSS</a>
+         <a href="https://as.js.cn/sitemap.xml" target="_blank" rel="noopener noreferrer" style="margin-left: 15px">MAP</a>',
         '自定义底部栏右侧内容（非必填）',
         '介绍：用于修改全站底部右侧内容 <br>
          例如：&lt;a href="/"&gt;首页&lt;/a&gt; &lt;a href="/"&gt;关于&lt;/a&gt;'
diff --git a/library/sitemap.php b/library/sitemap.php
new file mode 100644
index 0000000..f810ffe
--- /dev/null
+++ b/library/sitemap.php
@@ -0,0 +1,52 @@
+<?php
+$db = Typecho_Db::get();
+$options = Typecho_Widget::widget('Widget_Options');
+$pages = $db->fetchAll($db->select()->from('table.contents')
+    ->where('table.contents.status = ?', 'publish')
+    ->where('table.contents.created < ?', $options->gmtTime)
+    ->where('table.contents.type = ?', 'page')
+    ->order('table.contents.created', Typecho_Db::SORT_DESC));
+$articles = $db->fetchAll($db->select()->from('table.contents')
+    ->where('table.contents.status = ?', 'publish')
+    ->where('table.contents.created < ?', $options->gmtTime)
+    ->where('table.contents.type = ?', 'post')
+    ->order('table.contents.created', Typecho_Db::SORT_DESC));
+header("Content-Type: application/xml");
+echo "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
+echo "<urlset xmlns=\"http://www.sitemaps.org/schemas/sitemap/0.9\">\n";
+foreach ($pages as $page) {
+    $type = $page['type'];
+    $routeExists = (NULL != Typecho_Router::get($type));
+    $page['pathinfo'] = $routeExists ? Typecho_Router::url($type, $page) : '#';
+    $page['permalink'] = Typecho_Common::url($page['pathinfo'], $options->index);
+    echo "\t<url>\n";
+    echo "\t\t<loc>" . $page['permalink'] . "</loc>\n";
+    echo "\t\t<lastmod>" . date('Y-m-d\TH:i:s\Z', $page['modified']) . "</lastmod>\n";
+    echo "\t\t<changefreq>always</changefreq>\n";
+    echo "\t\t<priority>0.8</priority>\n";
+    echo "\t</url>\n";
+}
+foreach ($articles as $article) {
+    $type = $article['type'];
+    $article['categories'] = $db->fetchAll($db->select()->from('table.metas')
+        ->join('table.relationships', 'table.relationships.mid = table.metas.mid')
+        ->where('table.relationships.cid = ?', $article['cid'])
+        ->where('table.metas.type = ?', 'category')
+        ->order('table.metas.order', Typecho_Db::SORT_ASC));
+    $article['category'] = urlencode(current(Typecho_Common::arrayFlatten($article['categories'], 'slug')));
+    $article['slug'] = urlencode($article['slug']);
+    $article['date'] = new Typecho_Date($article['created']);
+    $article['year'] = $article['date']->year;
+    $article['month'] = $article['date']->month;
+    $article['day'] = $article['date']->day;
+    $routeExists = (NULL != Typecho_Router::get($type));
+    $article['pathinfo'] = $routeExists ? Typecho_Router::url($type, $article) : '#';
+    $article['permalink'] = Typecho_Common::url($article['pathinfo'], $options->index);
+    echo "\t<url>\n";
+    echo "\t\t<loc>" . $article['permalink'] . "</loc>\n";
+    echo "\t\t<lastmod>" . date('Y-m-d\TH:i:s\Z', $article['modified']) . "</lastmod>\n";
+    echo "\t\t<changefreq>always</changefreq>\n";
+    echo "\t\t<priority>0.5</priority>\n";
+    echo "\t</url>\n";
+}
+echo "</urlset>";