diff --git a/components/tooltip/Tooltip.tsx b/components/tooltip/Tooltip.tsx
index a466b060a..677632c09 100644
--- a/components/tooltip/Tooltip.tsx
+++ b/components/tooltip/Tooltip.tsx
@@ -56,7 +56,7 @@ export default defineComponent({
     },
   },
   methods: {
-    handleVisibleChange(visible) {
+    handleVisibleChange(visible: boolean) {
       if (!hasProp(this, 'visible')) {
         this.sVisible = this.isNoTitle() ? false : visible;
       }
@@ -85,7 +85,7 @@ export default defineComponent({
     // Fix Tooltip won't hide at disabled button
     // mouse events don't trigger at disabled button in Chrome
     // https://github.com/react-component/tooltip/issues/18
-    getDisabledCompatibleChildren(ele) {
+    getDisabledCompatibleChildren(ele: any) {
       if (
         ((typeof ele.type === 'object' &&
           (ele.type.__ANT_BUTTON === true ||
@@ -143,7 +143,7 @@ export default defineComponent({
     },
 
     // 动态设置动画点
-    onPopupAlign(domNode, align) {
+    onPopupAlign(domNode: HTMLElement, align: any) {
       const placements = this.getPlacements();
       // 当前返回的位置
       const placement = Object.keys(placements).filter(
diff --git a/components/tooltip/placements.ts b/components/tooltip/placements.ts
index f1897663e..b529f1e75 100644
--- a/components/tooltip/placements.ts
+++ b/components/tooltip/placements.ts
@@ -12,7 +12,15 @@ const autoAdjustOverflowDisabled = {
 
 const targetOffset = [0, 0];
 
-export function getOverflowOptions(autoAdjustOverflow) {
+interface PlacementsConfig {
+  arrowPointAtCenter: boolean;
+  arrowWidth?: number;
+  verticalArrowShift?: number;
+  horizontalArrowShift?: number;
+  autoAdjustOverflow?: boolean | Object;
+}
+
+export function getOverflowOptions(autoAdjustOverflow: boolean | Object) {
   if (typeof autoAdjustOverflow === 'boolean') {
     return autoAdjustOverflow ? autoAdjustOverflowEnabled : autoAdjustOverflowDisabled;
   }
@@ -22,7 +30,7 @@ export function getOverflowOptions(autoAdjustOverflow) {
   };
 }
 
-export default function getPlacements(config) {
+export default function getPlacements(config: PlacementsConfig) {
   const {
     arrowWidth = 5,
     horizontalArrowShift = 16,