diff --git a/components/FormBuilder/FormItemsRenderer.d.ts b/components/FormBuilder/FormItemsRenderer.d.ts
index d1f2d0c..7cb7a98 100644
--- a/components/FormBuilder/FormItemsRenderer.d.ts
+++ b/components/FormBuilder/FormItemsRenderer.d.ts
@@ -71,8 +71,8 @@ export interface FormOption {
   label?: ReactNode;
   /** 渲染类型 */
   render?: FormItemRenderType;
-  /** 占据栅格列数，默认 12 */
-  span?: number | string;
+  /** 占据栅格列数，默认 12，支持函数动态计算 */
+  span?: number | string | ((formValues: FormValues) => number | string);
   /** 是否必填，默认 true，支持函数动态计算 */
   required?: boolean | ((formValues: FormValues) => boolean);
   /** 验证规则 */
diff --git a/components/FormBuilder/FormItemsRenderer.js b/components/FormBuilder/FormItemsRenderer.js
index 2caf336..cadfe51 100644
--- a/components/FormBuilder/FormItemsRenderer.js
+++ b/components/FormBuilder/FormItemsRenderer.js
@@ -206,9 +206,17 @@ const FormItemsRenderer = ({
     return collapse && index >= 3 ? { display: "none" } : undefined;
   };
 
+  // 获取 span
+  const getSpan = (span) => {
+    // 支持动态计算 span
+    return typeof span === "function"
+      ? span(getFormValues())
+      : span;
+  }
+
   // 列数
   const getCol = (option) => {
-    const itemSpan = option.render === FORM_ITEM_RENDER_ENUM.DIVIDER ? 24 : option.span ?? span;
+    const itemSpan = option.render === FORM_ITEM_RENDER_ENUM.DIVIDER ? 24 : (getSpan(option.span) ?? span);
     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 };