diff --git a/src/components/FormBuilder/FormItemsRenderer.js b/src/components/FormBuilder/FormItemsRenderer.js
index b6cbe38..2fc2266 100644
--- a/src/components/FormBuilder/FormItemsRenderer.js
+++ b/src/components/FormBuilder/FormItemsRenderer.js
@@ -209,6 +209,7 @@ const FormItemsRenderer = ({
   // 列数
   const getCol = (option) => {
     const itemSpan = option.render === FORM_ITEM_RENDER_ENUM.DIVIDER ? 24 : (option.span ?? span);
+    // 这里除以2是因为：一行两列的span为4，一行一列的span要为2，不除以2的话一行一列的span不对
     const itemLabelCol = option.labelCol ?? (itemSpan === 24 ? { span: labelCol.span / 2 } : labelCol);
     const itemWrapperCol = option.wrapperCol ?? { span: 24 - itemLabelCol.span };
     return { span: itemSpan, labelCol: itemLabelCol, wrapperCol: itemWrapperCol };