diff --git a/app/Forms/ProductForm.php b/app/Forms/ProductForm.php
index cd7482d..0275ae2 100755
--- a/app/Forms/ProductForm.php
+++ b/app/Forms/ProductForm.php
@@ -52,7 +52,7 @@ class ProductForm extends Form
                 'label' => false
             ]
         ]);
-        $this->add("factor_item_ids", Field::SELECT, ["label" => "统计价格因素", "rules" => "required", "attr" => ["multiple" => true, "data-plugin" => "select2"]]);
+        $this->add("factor_item_ids[]", Field::SELECT, ["label" => "统计价格因素", "rules" => "required", "attr" => ["multiple" => true, "data-plugin" => "select2"]]);
         $this->add('buttons', 'buttongroup', ["splitted" => true, "buttons" => [
             ["label" => "保存", "attr" => ["class" => "btn btn-primary mr-1", "type" => "submit"]],
             ["label" => "返回", "attr" => ["class" => "btn btn-light btn-back", "type" => "button"]]