diff --git a/library/think/cache/driver/File.php b/library/think/cache/driver/File.php
index da3b3f6f..ea5688e5 100644
--- a/library/think/cache/driver/File.php
+++ b/library/think/cache/driver/File.php
@@ -90,8 +90,7 @@ class File extends Driver
      */
     public function has($name)
     {
-        $filename = $this->getCacheKey($name);
-        return is_file($filename);
+        return $this->get($name) ? true : false;
     }
 
     /**
diff --git a/library/think/cache/driver/Lite.php b/library/think/cache/driver/Lite.php
index a527a012..9e702eed 100644
--- a/library/think/cache/driver/Lite.php
+++ b/library/think/cache/driver/Lite.php
@@ -61,8 +61,7 @@ class Lite extends Driver
      */
     public function has($name)
     {
-        $filename = $this->getCacheKey($name);
-        return is_file($filename);
+        return $this->get($name) ? true : false;
     }
 
     /**