diff --git a/library/think/cache/driver/Redis.php b/library/think/cache/driver/Redis.php
index bfe73206..c1749e27 100644
--- a/library/think/cache/driver/Redis.php
+++ b/library/think/cache/driver/Redis.php
@@ -106,6 +106,32 @@ class Redis
         return $result;
     }
 
+    /**
+     * 自增缓存（针对数值缓存）
+     * @access public
+     * @param string    $name 缓存变量名
+     * @param int       $step 步长
+     * @param int       $expire  有效时间 0为永久
+     * @return false|int
+     */
+    public function inc($name, $step = 1, $expire = null)
+    {
+        return $this->handler->incrby($name, $step);
+    }
+
+    /**
+     * 自减缓存（针对数值缓存）
+     * @access public
+     * @param string    $name 缓存变量名
+     * @param int       $step 步长
+     * @param int       $expire  有效时间 0为永久
+     * @return false|int
+     */
+    public function dec($name, $step = 1, $expire = null)
+    {
+        return $this->handler->decrby($name, $step);
+    }
+
     /**
      * 删除缓存
      * @access public