diff --git a/CHANGELOG.md b/CHANGELOG.md
index 28b00ca..e981d41 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+## v6.0.81 / 2020-07-12
+- 优化代码质量
+
 ## v6.0.80 / 2020-07-12
 - 优化描述
 
diff --git a/src/cache/Mysql.php b/src/cache/Mysql.php
index 02014b9..0668cb2 100644
--- a/src/cache/Mysql.php
+++ b/src/cache/Mysql.php
@@ -73,7 +73,8 @@ class Mysql
                 'cache_value' => $cache_value,
                 'cache_expire' => Times::dateRear("Y-m-d H:i:s", $this->cache_expire)
             ]);
-        return $result ? true : false;
+        if (empty($result)) return false;
+        return true;
     }
 
     /**
@@ -107,7 +108,8 @@ class Mysql
         $result = Db::table($this->table)
             ->where('cache_name', $this->cache_name)
             ->delete();
-        return $result ? true : false;
+        if (empty($result)) return false;
+        return true;
     }
 
     /**
@@ -126,7 +128,8 @@ class Mysql
                 'cache_value' => $cache_value,
                 'cache_expire' => Times::dateRear("Y-m-d H:i:s", $this->cache_expire)
             ]);
-        return $result ? true : false;
+        if (empty($result)) return false;
+        return true;
     }
 
     /**
@@ -146,7 +149,8 @@ class Mysql
             ->update([
                 'cache_value' => $cache_value + $int
             ]);
-        return $result ? true : false;
+        if (empty($result)) return false;
+        return true;
     }
 
     /**
@@ -166,6 +170,7 @@ class Mysql
             ->update([
                 'cache_value' => $cache_value - $int
             ]);
-        return $result ? true : false;
+        if (empty($result)) return false;
+        return true;
     }
 }
diff --git a/src/common.php b/src/common.php
index b6e6e04..efaeecd 100644
--- a/src/common.php
+++ b/src/common.php
@@ -28,7 +28,7 @@ use think\db\exception\ModelNotFoundException;
 /**
  * 定义当前版本
  */
-const VERSION = '6.0.80';
+const VERSION = '6.0.81';
 
 if (!function_exists('get_ip_info')) {
     /**
diff --git a/src/facade/Files.php b/src/facade/Files.php
index 21b78d1..a676590 100644
--- a/src/facade/Files.php
+++ b/src/facade/Files.php
@@ -36,6 +36,8 @@ use think\Facade;
  * @method static bool folderZip(string $name, string $suffix_name = '.png', string $file_name = '*') 把文件夹里面的文件打包成zip文件
  * @method static string getFiles(string $path) 获取目录下的所有文件和目录
  * @method static bool rmFiles(string $path) 删除目录下的文件
+ * @method static bool judgeFile(string $path) 判断文件是否存在
+ * @method static bool judgeContents(string $path) 判断目录是否存在
  */
 class Files extends Facade
 {
diff --git a/src/helper/Files.php b/src/helper/Files.php
index 1ac70b9..bc1c935 100644
--- a/src/helper/Files.php
+++ b/src/helper/Files.php
@@ -147,4 +147,26 @@ class Files
         }
         return true;
     }
+
+    /**
+     * 判断文件是否存在
+     * @param string $path
+     * @return bool
+     */
+    public function judgeFile(string $path): bool
+    {
+        if (file_exists($path)) return true;
+        return false;
+    }
+
+    /**
+     * 判断目录是否存在
+     * @param string $path
+     * @return bool
+     */
+    public function judgeContents(string $path): bool
+    {
+        if (is_dir($path)) return true;
+        return false;
+    }
 }
diff --git a/src/service/bt/ApiService.php b/src/service/bt/ApiService.php
index 3e0abb1..9c62fa1 100644
--- a/src/service/bt/ApiService.php
+++ b/src/service/bt/ApiService.php
@@ -20,6 +20,7 @@
 namespace DtApp\ThinkLibrary\service\bt;
 
 use DtApp\ThinkLibrary\exception\DtaException;
+use DtApp\ThinkLibrary\facade\Files;
 use DtApp\ThinkLibrary\Service;
 use DtApp\ThinkLibrary\service\curl\BtService;
 
@@ -346,14 +347,8 @@ class ApiService extends Service
     public function toArray()
     {
         $this->getHttp();
-        switch ($this->where['type']) {
-            case 'sites':
-                $this->getDataWithOrderOpt();
-                break;
-            default:
-                $this->getDataWithCount();
-                break;
-        }
+        if ($this->where['type'] == 'sites') $this->getDataWithOrderOpt();
+        else $this->getDataWithCount();
         if (empty($this->backtrack)) return [];
         if (is_array($this->backtrack)) return $this->backtrack;
         return json_decode($this->backtrack, true);
@@ -386,7 +381,7 @@ class ApiService extends Service
         //定义cookie保存位置
         $file = app()->getRootPath() . 'runtime/dtapp/bt/cookie/';
         $cookie_file = $file . md5($this->panel) . '.cookie';
-        is_dir($file) or mkdir($file, 0777, true);
+        if (empty(Files::judgeContents($file))) mkdir($file, 0777, true);
         if (!file_exists($cookie_file)) {
             $fp = fopen($cookie_file, 'w+');
             fclose($fp);