diff --git a/src/components/FormBuilder/FormItemsRenderer.d.ts b/src/components/FormBuilder/FormItemsRenderer.d.ts
index d59ddd3..021aeda 100644
--- a/src/components/FormBuilder/FormItemsRenderer.d.ts
+++ b/src/components/FormBuilder/FormItemsRenderer.d.ts
@@ -119,7 +119,7 @@ export interface FormOption<T extends keyof FORM_ITEM_RENDER_TYPE_MAP = keyof FO
   /** 是否仅用于保存标签，不渲染到页面上，只在表单中保存数据，默认 false */
   onlyForLabel?: boolean;
   /** Form.List 独有的属性 */
-  formListUniqueProps?: FormListUniqueProps;
+  formListUniqueProps?: FormListUniqueProps | ((formValues: FormValues) => FormListUniqueProps);
 }
 
 /**
diff --git a/src/components/FormBuilder/FormItemsRenderer.js b/src/components/FormBuilder/FormItemsRenderer.js
index c81055c..5ef58ef 100644
--- a/src/components/FormBuilder/FormItemsRenderer.js
+++ b/src/components/FormBuilder/FormItemsRenderer.js
@@ -249,10 +249,10 @@ const FormItemsRenderer = ({
 
     switch (render) {
       case FORM_ITEM_RENDER_ENUM.INPUT:
-        return <Input placeholder={placeholder} maxLength={50} {...componentProps} />;
+        return <Input placeholder={placeholder} maxLength={option.useConstraints !== false ? 50 : 9999} {...componentProps} />;
 
       case FORM_ITEM_RENDER_ENUM.TEXTAREA:
-        return <TextArea placeholder={placeholder} maxLength={500} showCount={true} rows={3} {...componentProps} />;
+        return <TextArea placeholder={placeholder} maxLength={option.useConstraints !== false ? 500 : 9999} showCount={true} rows={3} {...componentProps} />;
 
       case FORM_ITEM_RENDER_ENUM.INPUT_NUMBER:
       case FORM_ITEM_RENDER_ENUM.NUMBER: