diff --git a/library/think/cache/driver/Redis.php b/library/think/cache/driver/Redis.php
index 027b3ea2..8956e774 100644
--- a/library/think/cache/driver/Redis.php
+++ b/library/think/cache/driver/Redis.php
@@ -70,7 +70,7 @@ class Redis extends Driver
      */
     public function has($name)
     {
-        return $this->handler->exists($this->getCacheKey($name));
+        return (bool) $this->handler->exists($this->getCacheKey($name));
     }
 
     /**