diff --git a/upload/source/admincp/admincp_checktools.php b/upload/source/admincp/admincp_checktools.php
index f0e8c8a61e8c5a2fe86cb4fb3bb181d2a5a8715f..58f595dce72e1ff3ea5f8de9dab1828cc738b78b 100644
--- a/upload/source/admincp/admincp_checktools.php
+++ b/upload/source/admincp/admincp_checktools.php
@@ -473,6 +473,7 @@ if($operation == 'filecheck') {
 		$rule['{caddy}'] .= '@'.$k.' path_regexp '.$k.' ^(.*)/'.$rulepath.$v."$\n".'rewrite @'.$k.' {re.'.$k.'.1}/'.$rulepath.pvadd($rewritedata['rulereplace'][$k], array('{re.'.$k.'.', '}')).'&{query}'."\n";
 	}
 	$rule['{nginx}'] .= "if (!-e \$request_filename) {\n\treturn 404;\n}";
+	$rule['{siteroot}'] = !empty($_G['siteroot']) ? $_G['siteroot'] : '/';
 	echo str_replace(array_keys($rule), $rule, cplang('rewrite_message'));
 
 } elseif($operation == 'robots') {
diff --git a/upload/source/language/lang_admincp.php b/upload/source/language/lang_admincp.php
index 07d9929e72cede547e275ac6dd6eada4a6b63fa1..1876cb97f11be808bde1d23a904879b7c8a348ad 100644
--- a/upload/source/language/lang_admincp.php
+++ b/upload/source/language/lang_admincp.php
@@ -7106,8 +7106,8 @@ $lang = array
 # 将 RewriteEngine 模式打开
 RewriteEngine On
 
-# 修改以下语句中的 /discuz 为您的论坛目录地址，如果程序放在根目录中，请将 /discuz 修改为 /
-RewriteBase /discuz
+# 如 www.discuz.net/bbs/，对应的就是 RewriteBase /bbs/，如果程序放在根目录中，使用 RewriteBase /
+RewriteBase {siteroot}
 
 # Rewrite 系统规则请勿修改
 {apache2}