diff --git a/admin/install.php b/admin/install.php
index 75bd03f3..bd5cb4f0 100644
--- a/admin/install.php
+++ b/admin/install.php
@@ -3,7 +3,7 @@
  * @Author: printempw
  * @Date:   2016-01-16 23:01:33
  * @Last Modified by:   printempw
- * @Last Modified time: 2016-03-13 09:38:50
+ * @Last Modified time: 2016-03-13 11:26:50
  *
  * Blessing Skin Server Installer
  */
@@ -140,7 +140,7 @@ if (isset($_POST['username']) && isset($_POST['password']) && isset($_POST['pass
 	header('Location: install.php?step=2&msg=表单信息不完整。'); die();
 }
 
-$sql  =  "CREATE TABLE IF NOT EXISTS `users` (
+$sql  =  "CREATE TABLE IF NOT EXISTS `".DB_PREFIX."users` (
 		  `uid` int(11) NOT NULL AUTO_INCREMENT,
 		  `username` varchar(20) NOT NULL,
 		  `password` varchar(32) NOT NULL,
@@ -161,7 +161,7 @@ if (!$conn->query($sql)) { ?>
 }
 
 // Insert user
-$conn->query("INSERT INTO `users` (`uid`, `username`, `password`, `ip`, `preference`) VALUES
+$conn->query("INSERT INTO `".DB_PREFIX."users` (`uid`, `username`, `password`, `ip`, `preference`) VALUES
 								  (1, '".$username."', '".md5($_POST['password'])."', '127.0.0.1', 'default')");
 
 if (!is_dir("../textures/")) {
diff --git a/config.example.php b/config.example.php
index 39a69e0a..c049ddc3 100644
--- a/config.example.php
+++ b/config.example.php
@@ -2,7 +2,7 @@
 /* MySQL 数据库名 */
 define('DB_NAME', 'skin');
 
-/* MySQL 用户名 */
+/* MySQL 数据库用户名 */
 define('DB_USER', 'root');
 
 /* MySQL 连接密码 */
@@ -14,10 +14,19 @@ define('DB_PORT', 3306);
 /* MySQL 主机 */
 define('DB_HOST', 'localhost');
 
+/**
+ * 数据表前缀
+ *
+ * 如果您有在同一数据库内安装多个 Blessing Skin Server 的需求，
+ * 或者需要与 Authme、Discuz 等程序对接时，请为每个皮肤站设置
+ * 不同的数据表前缀。前缀名只能为数字、字母加下划线。
+ */
+define('DB_PREFIX', 'bs_');
+
 /* 盐，用于 token 加密，修改为任意随机字符串 */
 define('SALT', '9tvsh55d*s');
 
-/* 调试模式，开启后将会显示所有用于错误提示 */
+/* 调试模式，开启后将会显示所有错误提示 */
 define('DEBUG_MODE', false);
 
 /* 同一 IP 最大可注册账户数 */
diff --git a/includes/Database.class.php b/includes/Database.class.php
index d0f79ea8..032b6ed4 100644
--- a/includes/Database.class.php
+++ b/includes/Database.class.php
@@ -3,7 +3,7 @@
  * @Author: printempw
  * @Date:   2016-02-02 21:59:06
  * @Last Modified by:   printempw
- * @Last Modified time: 2016-03-12 20:55:08
+ * @Last Modified time: 2016-03-13 11:27:11
  */
 
 class Database
@@ -22,7 +22,7 @@ class Database
                 "无法连接至 MySQL 服务器。请确认 config.php 中的配置是否正确：".$conn->connect_error);
         }
         if (!self::checkTableExist($conn)) {
-            Utils::showErrorPage(-1, "数据库中不存在 users 表。请先运行 /admin/install.php 进行安装。");
+            Utils::showErrorPage(-1, "数据库中不存在 ".DB_PREFIX."users 表。请先运行 /admin/install.php 进行安装。");
         }
         $dir = dirname(dirname(__FILE__));
         if (!is_dir("$dir/textures/")) {
@@ -33,7 +33,7 @@ class Database
 
     public static function checkTableExist($conn) {
         $sql = "SELECT table_name FROM
-                 `INFORMATION_SCHEMA`.`TABLES` WHERE table_name ='users'
+                 `INFORMATION_SCHEMA`.`TABLES` WHERE table_name ='".DB_PREFIX."users'
                  AND TABLE_SCHEMA='".DB_NAME."'";
         return ($conn->query($sql)->num_rows != 0) ? true : false;
     }
@@ -51,16 +51,16 @@ class Database
     }
 
     public function select($key, $value) {
-        return $this->fetchArray("SELECT * FROM users WHERE $key='$value'");
+        return $this->fetchArray("SELECT * FROM ".DB_PREFIX."users WHERE $key='$value'");
     }
 
     public function getNumRows($key, $value) {
-        $sql = "SELECT * FROM users WHERE $key='$value'";
+        $sql = "SELECT * FROM ".DB_PREFIX."users WHERE $key='$value'";
         return $this->query($sql)->num_rows;
     }
 
     public function getRecordNum() {
-        $sql = "SELECT * FROM users WHERE 1";
+        $sql = "SELECT * FROM ".DB_PREFIX."users WHERE 1";
         return $this->query($sql)->num_rows;
     }
 
@@ -72,17 +72,17 @@ class Database
         $uname  = $array['uname'];
         $passwd = $array['passwd'];
         $ip = $array['ip'];
-        $sql = "INSERT INTO users (username, password, ip, preference)
-                             VALUES ('$uname', '$passwd', '$ip', 'default')";
+        $sql = "INSERT INTO ".DB_PREFIX."users (username, password, ip, preference)
+                                            VALUES ('$uname', '$passwd', '$ip', 'default')";
         return $this->query($sql);
     }
 
     public function update($uname, $key, $value) {
-        return $this->query("UPDATE users SET `$key`='$value' WHERE username='$uname'");
+        return $this->query("UPDATE ".DB_PREFIX."users SET `$key`='$value' WHERE username='$uname'");
     }
 
     public function delete($uname) {
-        return $this->query("DELETE from users WHERE username='$uname'");
+        return $this->query("DELETE FROM ".DB_PREFIX."users WHERE username='$uname'");
     }
 
 }