diff --git a/.htaccess b/.htaccess
index 65c0f311..159ec224 100644
--- a/.htaccess
+++ b/.htaccess
@@ -24,6 +24,7 @@ ErrorDocument 404 /404.php
 	RewriteRule ^reply$ reply.php [L]
 	RewriteRule ^robots.txt$ robots.php [L]
 	RewriteRule ^settings$ settings.php [L]
+	RewriteRule ^sitemap-(topics|pages|tags|users|index)(-([0-9]+))?.xml$ sitemap.php?action=$1&page=$3 [L]
 	RewriteRule ^t/([0-9]+)(-([0-9]*))?$ topic.php?id=$1&page=$3 [L]
 	RewriteRule ^tag/(.*?)(/page/([0-9]*))?$ tag.php?name=$1&page=$3 [L]
 	RewriteRule ^tags/following(/page/([0-9]*))?$ favorite_tags.php?page=$2 [L]
diff --git a/httpd.ini b/httpd.ini
index b3f2d75a..ea104336 100644
--- a/httpd.ini
+++ b/httpd.ini
@@ -14,6 +14,7 @@ RewriteRule ^(.*)/register $1/register.php
 RewriteRule ^(.*)/reply $1/reply.php
 RewriteRule ^(.*)/robots.txt $1/robots.php
 RewriteRule ^(.*)/settings $1/settings.php
+RewriteRule ^(.*)/sitemap-(topics|pages|tags|users|index)(-([0-9]+))?.xml $1/sitemap.php\?action=$2&page=$4
 RewriteRule ^(.*)/t/([0-9]+)(-([0-9]*))? $1/topic.php\?id=$2&page=$4
 RewriteRule ^(.*)/tag/([^/]*)(/page/([0-9]*))? $1/tag.php\?name=$2&page=$4
 RewriteRule ^(.*)/tags/following(/page/([0-9]*))? $1/favorite_tags.php\?page=$3
diff --git a/install/htaccess.tpl b/install/htaccess.tpl
index a1b077e4..e5ef3f8d 100644
--- a/install/htaccess.tpl
+++ b/install/htaccess.tpl
@@ -24,6 +24,7 @@ ErrorDocument 404 {{WebSitePath}}404.php
 	RewriteRule ^reply$ reply.php [L]
 	RewriteRule ^robots.txt$ robots.php [L]
 	RewriteRule ^settings$ settings.php [L]
+	RewriteRule ^sitemap-(topics|pages|tags|users|index)(-([0-9]+))?.xml$ sitemap.php?action=$1&page=$3 [L]
 	RewriteRule ^t/([0-9]+)(-([0-9]*))?$ topic.php?id=$1&page=$3 [L]
 	RewriteRule ^tag/(.*?)(/page/([0-9]*))?$ tag.php?name=$1&page=$3 [L]
 	RewriteRule ^tags/following(/page/([0-9]*))?$ favorite_tags.php?page=$2 [L]
diff --git a/robots.php b/robots.php
index f36e48d5..a4839c4c 100644
--- a/robots.php
+++ b/robots.php
@@ -22,13 +22,18 @@
 //Crawl-delay: 1
 $CurHost = 'http://'.$_SERVER['HTTP_HOST'];
 $ItemPerSitemap = 30000;
+//sitemap 索引
+echo 'Sitemap: ',$CurHost,"/sitemap-index.xml\n";
 //帖子
 for($i = 1; $i <= ceil($Config['NumTopics']/$ItemPerSitemap); $i++)
 	echo 'Sitemap: ',$CurHost,'/sitemap-topics-',$i,".xml\n";
+//帖子页
 for($i = 1; $i <= ceil(ceil($Config['NumTopics']/$Config['TopicsPerPage'])/$ItemPerSitemap); $i++)
 	echo 'Sitemap: ',$CurHost,'/sitemap-pages-',$i,".xml\n";
+//话题
 for($i = 1; $i <= ceil($Config['NumTags']/$ItemPerSitemap); $i++)
 	echo 'Sitemap: ',$CurHost,'/sitemap-tags-',$i,".xml\n";
+//用户
 for($i = 1; $i <= ceil($Config['NumUsers']/$ItemPerSitemap); $i++)
 	echo 'Sitemap: ',$CurHost,'/sitemap-users-',$i,".xml\n";
 ?>
diff --git a/sitemap.php b/sitemap.php
new file mode 100644
index 00000000..9cfa18a6
--- /dev/null
+++ b/sitemap.php
@@ -0,0 +1,108 @@
+<?php
+include(dirname(__FILE__) . '/common.php');
+header("Content-Type: text/xml");
+$Action = Request('POST','action',false);
+$Page = intval($_GET['page']);
+$CurHost = 'http://' . $_SERVER['HTTP_HOST'];
+$ItemPerSitemap  = 30000;
+?><?xml version="1.0" encoding="UTF-8" ?>
+<?php
+if($_SERVER['HTTP_HOST'] == $Config['MobileDomainName'])
+	$MobileTag = '<mobile:mobile type="mobile"/>';
+else
+	$MobileTag = '';
+switch ($Action) {
+	case 'topics':
+	?>
+	<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:mobile="http://www.baidu.com/schemas/sitemap-mobile/1/">
+	<?php if($Page==1){ ?>
+	<url>
+		<loc><?php echo $CurHost.'/'; ?></loc>
+		<?php echo $MobileTag; ?>
+		<lastmod><?php echo date("Y-m-d", $TimeStamp); ?></lastmod>
+		<priority>1.0</priority>
+	</url>
+	<?php
+	}
+		$TopicsArray = $DB->query('SELECT `ID`, `LastTime`, `Replies` FROM '.$Prefix.'topics force index(LastTime) WHERE IsDel=0 ORDER BY LastTime DESC LIMIT '.($Page-1)*$ItemPerSitemap.','.$ItemPerSitemap);
+		foreach ($TopicsArray as $Topic) {?>
+	<url>
+		<loc><?php echo $CurHost.'/t/'.$Topic['ID']; ?></loc>
+		<?php echo $MobileTag; ?>
+		<lastmod><?php echo date("Y-m-d", $Topic['LastTime']); ?></lastmod>
+		<priority>0.<?php echo $Topic['Replies']>=70?'8':ceil(($Topic['Replies']+10)/10); ?></priority>
+	</url>
+		<?php } ?>
+	</urlset><?php
+		break;
+
+
+	case 'pages':
+		?>
+	<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:mobile="http://www.baidu.com/schemas/sitemap-mobile/1/"> 
+	<?php
+		if(($Page*$ItemPerSitemap) <= ceil($Config['NumTopics']/$Config['TopicsPerPage'])){
+			for($i = ($Page-1)*$ItemPerSitemap+1; $i <= $Page*$ItemPerSitemap; $i++)
+			{?>
+	<url>
+		<loc><?php echo $CurHost.'/page/'.$i; ?></loc>
+		<?php echo $MobileTag; ?>
+		<priority>0.3</priority>
+	</url>
+	<?php
+			}
+		}
+	?>
+	</urlset><?php
+		break;
+	case 'tags':
+		?>
+	<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:mobile="http://www.baidu.com/schemas/sitemap-mobile/1/">
+	<?php
+		$TagsArray = $DB->query('SELECT `Name`, `MostRecentPostTime`, `TotalPosts` FROM '.$Prefix.'tags force index(PRI) ORDER BY ID DESC LIMIT '.($Page-1)*$ItemPerSitemap.','.$ItemPerSitemap);
+		foreach ($TagsArray as $Tags) {?>
+	<url>
+		<loc><?php echo $CurHost.'/tag/'.urlencode($Tags['Name']); ?></loc>
+		<?php echo $MobileTag; ?>
+		<lastmod><?php echo date("Y-m-d", $Tags['MostRecentPostTime']); ?></lastmod>
+		<priority>0.<?php echo $Tags['TotalPosts']>=50?'6':ceil(($Tags['TotalPosts']+10)/10); ?></priority>
+	</url>
+	<?php } ?>
+	</urlset><?php
+		break;
+	case 'users':
+		?>
+	<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:mobile="http://www.baidu.com/schemas/sitemap-mobile/1/">
+	<?php
+		$UsersArray = $DB->query('SELECT `UserName`, `Topics`, `Replies`, `LastPostTime` FROM '.$Prefix.'users force index(PRI) WHERE UserAccountStatus=1 ORDER BY ID DESC LIMIT '.($Page-1)*$ItemPerSitemap.','.$ItemPerSitemap);
+		foreach ($UsersArray as $User) {?>
+	<url>
+		<loc><?php echo $CurHost.'/u/'.urlencode($User['UserName']); ?></loc>
+		<?php echo $MobileTag; ?>
+		<lastmod><?php echo date("Y-m-d", $User['LastPostTime']); ?></lastmod>
+		<priority>0.<?php echo $User['Topics']+$User['Replies']>=40?'5':ceil(($User['Topics']+$User['Replies'])/10); ?></priority>
+	</url>
+	<?php } ?>
+	</urlset><?php
+		break;
+	default:
+		?>
+	<sitemapindex>
+	<?php
+	//帖子
+	for($i = 1; $i <= ceil($Config['NumTopics']/$ItemPerSitemap); $i++)
+		echo '<sitemap><loc>',$CurHost,'/sitemap-topics-',$i,".xml</loc></sitemap>\n";
+	//帖子页
+	for($i = 1; $i <= ceil(ceil($Config['NumTopics']/$Config['TopicsPerPage'])/$ItemPerSitemap); $i++)
+		echo '<sitemap><loc>',$CurHost,'/sitemap-pages-',$i,".xml</loc></sitemap>\n";
+	//话题
+	for($i = 1; $i <= ceil($Config['NumTags']/$ItemPerSitemap); $i++)
+		echo '<sitemap><loc>',$CurHost,'/sitemap-tags-',$i,".xml</loc></sitemap>\n";
+	//用户
+	for($i = 1; $i <= ceil($Config['NumUsers']/$ItemPerSitemap); $i++)
+		echo '<sitemap><loc>',$CurHost,'/sitemap-users-',$i,".xml</loc></sitemap>\n";
+	?>
+	</sitemapindex><?php
+		break;
+}
+?>
\ No newline at end of file