diff --git a/components/card/index.tsx b/components/card/index.tsx
index 361ea4e9c0..983eb92c89 100644
--- a/components/card/index.tsx
+++ b/components/card/index.tsx
@@ -49,7 +49,7 @@ export interface CardProps extends Omit<React.HTMLAttributes<HTMLDivElement>, 't
   cover?: React.ReactNode;
   actions?: React.ReactNode[];
   tabList?: CardTabListType[];
-  tabBarExtraContent?: React.ReactNode | null;
+  tabBarExtraContent?: React.ReactNode;
   onTabChange?: (key: string) => void;
   activeTabKey?: string;
   defaultActiveTabKey?: string;
diff --git a/components/message/index.tsx b/components/message/index.tsx
index 43b5ab46d9..a61d6a571c 100755
--- a/components/message/index.tsx
+++ b/components/message/index.tsx
@@ -198,7 +198,7 @@ function notice(args: ArgsProps): MessageType {
   return result;
 }
 
-type ConfigContent = React.ReactNode | string;
+type ConfigContent = React.ReactNode;
 type ConfigDuration = number | (() => void);
 type JointContent = ConfigContent | ArgsProps;
 export type ConfigOnClose = () => void;
diff --git a/components/modal/Modal.tsx b/components/modal/Modal.tsx
index 9b28f9cb2b..f981308104 100644
--- a/components/modal/Modal.tsx
+++ b/components/modal/Modal.tsx
@@ -38,7 +38,7 @@ export interface ModalProps {
   /** 确定按钮 loading */
   confirmLoading?: boolean;
   /** 标题 */
-  title?: React.ReactNode | string;
+  title?: React.ReactNode;
   /** 是否显示右上角的关闭按钮 */
   closable?: boolean;
   /** 点击确定回调 */
diff --git a/components/tree/utils/iconUtil.tsx b/components/tree/utils/iconUtil.tsx
index 48bcb4324c..d479b7fd62 100644
--- a/components/tree/utils/iconUtil.tsx
+++ b/components/tree/utils/iconUtil.tsx
@@ -10,7 +10,7 @@ import { isValidElement, cloneElement } from '../../_util/reactNode';
 
 export default function renderSwitcherIcon(
   prefixCls: string,
-  switcherIcon: React.ReactNode | null | undefined,
+  switcherIcon: React.ReactNode,
   showLine: boolean | { showLeafIcon: boolean } | undefined,
   { isLeaf, expanded, loading }: AntTreeNodeProps,
 ) {