diff --git a/src/facade/Arrays.php b/src/facade/Arrays.php
index 19109fd..47a64fe 100644
--- a/src/facade/Arrays.php
+++ b/src/facade/Arrays.php
@@ -27,8 +27,9 @@ use think\Facade;
  * @package think\facade
  * @mixin helper
  *
- * @method helper rand(int $num) mixed 数组随机返回一个下标
- * @method helper randValue(int $num) mixed 数组随机返回一个值
+ * @method helper rand(array $arr) mixed 数组随机返回一个下标
+ * @method helper randValue(array $arr) mixed 数组随机返回一个值
+ * @method helper split(array $data, $num = 5) array 分隔数组
  */
 class Arrays extends Facade
 {
diff --git a/src/helper/Arrays.php b/src/helper/Arrays.php
index 0499cb0..41cb368 100644
--- a/src/helper/Arrays.php
+++ b/src/helper/Arrays.php
@@ -13,6 +13,7 @@
 // | github 仓库地址 ：https://github.com/GC0202/ThinkLibrary
 // | Packagist 地址 ：https://packagist.org/packages/liguangchun/think-library
 // +----------------------------------------------------------------------
+declare (strict_types=1);
 
 namespace DtApp\ThinkLibrary\helper;
 
@@ -28,7 +29,7 @@ class Arrays
      * @param $arr
      * @return mixed
      */
-    public function rand($arr)
+    public function rand(array $arr)
     {
         return array_rand($arr);
     }
@@ -38,9 +39,30 @@ class Arrays
      * @param $arr
      * @return mixed
      */
-    public function randValue($arr)
+    public function randValue(array $arr)
     {
         return $arr[array_rand($arr)];
     }
 
+    /**
+     * 分隔数组
+     * @param array $data 数组
+     * @param int $num 数量
+     * @return array
+     */
+    public function split(array $data, $num = 5): array
+    {
+        $arrRet = array();
+        if (!isset($data) || empty($data)) return $arrRet;
+        $iCount = count($data) / $num;
+        if (!is_int($iCount)) $iCount = ceil($iCount);
+        else $iCount += 1;
+        for ($i = 0; $i < $iCount; ++$i) {
+            $arrInfos = array_slice($data, $i * $num, $num);
+            if (empty($arrInfos)) continue;
+            $arrRet[] = $arrInfos;
+            unset($arrInfos);
+        }
+        return $arrRet;
+    }
 }