diff --git a/packages/vant/src/button/Button.tsx b/packages/vant/src/button/Button.tsx
index 1a86daf8f..03a030459 100644
--- a/packages/vant/src/button/Button.tsx
+++ b/packages/vant/src/button/Button.tsx
@@ -9,6 +9,7 @@ import {
 import {
   extend,
   numericProp,
+  preventDefault,
   makeStringProp,
   createNamespace,
   BORDER_SURROUND,
@@ -135,7 +136,7 @@ export default defineComponent({
 
     const onClick = (event: MouseEvent) => {
       if (props.loading) {
-        event.preventDefault();
+        preventDefault(event);
       } else if (!props.disabled) {
         emit('click', event);
         route();
diff --git a/packages/vant/src/dropdown-menu/DropdownMenu.tsx b/packages/vant/src/dropdown-menu/DropdownMenu.tsx
index 8890a16a6..a8d3c312d 100644
--- a/packages/vant/src/dropdown-menu/DropdownMenu.tsx
+++ b/packages/vant/src/dropdown-menu/DropdownMenu.tsx
@@ -12,6 +12,7 @@ import {
   isDef,
   truthProp,
   numericProp,
+  windowHeight,
   makeStringProp,
   makeNumericProp,
   createNamespace,
@@ -86,7 +87,7 @@ export default defineComponent({
         if (props.direction === 'down') {
           offset.value = rect.bottom;
         } else {
-          offset.value = window.innerHeight - rect.top;
+          offset.value = windowHeight.value - rect.top;
         }
       }
     };
diff --git a/packages/vant/src/form/Form.tsx b/packages/vant/src/form/Form.tsx
index fd1aeae24..97ce45d2c 100644
--- a/packages/vant/src/form/Form.tsx
+++ b/packages/vant/src/form/Form.tsx
@@ -5,6 +5,7 @@ import {
   FORM_KEY,
   truthProp,
   numericProp,
+  preventDefault,
   makeStringProp,
   createNamespace,
 } from '../utils';
@@ -170,7 +171,7 @@ export default defineComponent({
     };
 
     const onSubmit = (event: Event) => {
-      event.preventDefault();
+      preventDefault(event);
       submit();
     };
 
diff --git a/packages/vant/src/image-preview/ImagePreview.tsx b/packages/vant/src/image-preview/ImagePreview.tsx
index 1c82d2734..6a38b505c 100644
--- a/packages/vant/src/image-preview/ImagePreview.tsx
+++ b/packages/vant/src/image-preview/ImagePreview.tsx
@@ -16,6 +16,8 @@ import {
   truthProp,
   unknownProp,
   Interceptor,
+  windowWidth,
+  windowHeight,
   makeArrayProp,
   makeStringProp,
   makeNumericProp,
@@ -25,7 +27,7 @@ import {
 } from '../utils';
 
 // Composables
-import { useRect, useWindowSize } from '@vant/use';
+import { useRect } from '@vant/use';
 import { useExpose } from '../composables/use-expose';
 
 // Components
@@ -78,7 +80,6 @@ export default defineComponent({
 
   setup(props, { emit, slots }) {
     const swipeRef = ref<SwipeInstance>();
-    const windowSize = useWindowSize();
 
     const state = reactive({
       active: 0,
@@ -185,7 +186,7 @@ export default defineComponent({
 
     onMounted(resize);
 
-    watch([windowSize.width, windowSize.height], resize);
+    watch([windowWidth, windowHeight], resize);
 
     watch(
       () => props.startPosition,
diff --git a/packages/vant/src/lazyload/vue-lazyload/lazy-container.js b/packages/vant/src/lazyload/vue-lazyload/lazy-container.js
index 04dcae4ae..cb9f75dc1 100644
--- a/packages/vant/src/lazyload/vue-lazyload/lazy-container.js
+++ b/packages/vant/src/lazyload/vue-lazyload/lazy-container.js
@@ -14,7 +14,7 @@ class LazyContainer {
     this.options = {};
     this.lazy = lazy;
 
-    this._queue = [];
+    this.queue = [];
     this.update({ el, binding });
   }
 
@@ -61,7 +61,7 @@ class LazyContainer {
 export default class LazyContainerManager {
   constructor({ lazy }) {
     this.lazy = lazy;
-    this._queue = [];
+    this.queue = [];
   }
 
   bind(el, binding, vnode) {
@@ -71,19 +71,19 @@ export default class LazyContainerManager {
       vnode,
       lazy: this.lazy,
     });
-    this._queue.push(container);
+    this.queue.push(container);
   }
 
   update(el, binding, vnode) {
-    const container = this._queue.find((item) => item.el === el);
+    const container = this.queue.find((item) => item.el === el);
     if (!container) return;
     container.update({ el, binding, vnode });
   }
 
   unbind(el) {
-    const container = this._queue.find((item) => item.el === el);
+    const container = this.queue.find((item) => item.el === el);
     if (!container) return;
     container.clear();
-    remove(this._queue, container);
+    remove(this.queue, container);
   }
 }
diff --git a/packages/vant/src/lazyload/vue-lazyload/lazy-image.js b/packages/vant/src/lazyload/vue-lazyload/lazy-image.js
index b43853301..1aec9cbf9 100644
--- a/packages/vant/src/lazyload/vue-lazyload/lazy-image.js
+++ b/packages/vant/src/lazyload/vue-lazyload/lazy-image.js
@@ -59,7 +59,7 @@ export default (lazyManager) => ({
   },
   methods: {
     init() {
-      const { src, loading, error } = lazyManager._valueFormatter(this.src);
+      const { src, loading, error } = lazyManager.valueFormatter(this.src);
       this.state.loaded = false;
       this.options.src = src;
       this.options.error = error;
diff --git a/packages/vant/src/lazyload/vue-lazyload/lazy.js b/packages/vant/src/lazyload/vue-lazyload/lazy.js
index 08afe16ec..04435a862 100644
--- a/packages/vant/src/lazyload/vue-lazyload/lazy.js
+++ b/packages/vant/src/lazyload/vue-lazyload/lazy.js
@@ -50,9 +50,9 @@ export default function () {
       observerOptions,
     }) {
       this.mode = modeType.event;
-      this.ListenerQueue = [];
-      this.TargetIndex = 0;
-      this.TargetQueue = [];
+      this.listeners = [];
+      this.targetIndex = 0;
+      this.targets = [];
       this.options = {
         silent,
         dispatchEvent: !!dispatchEvent,
@@ -70,10 +70,10 @@ export default function () {
         observer: !!observer,
         observerOptions: observerOptions || DEFAULT_OBSERVER_OPTIONS,
       };
-      this._initEvent();
-      this._imageCache = new ImageCache({ max: 200 });
+      this.initEvent();
+      this.imageCache = new ImageCache({ max: 200 });
       this.lazyLoadHandler = throttle(
-        this._lazyLoadHandler.bind(this),
+        this.lazyLoadHandler.bind(this),
         this.options.throttleWait
       );
 
@@ -94,7 +94,7 @@ export default function () {
      * @return {Array}
      */
     performance() {
-      return this.ListenerQueue.map((item) => item.performance());
+      return this.listeners.map((item) => item.performance());
     }
 
     /*
@@ -103,12 +103,12 @@ export default function () {
      * @return
      */
     addLazyBox(vm) {
-      this.ListenerQueue.push(vm);
+      this.listeners.push(vm);
       if (inBrowser) {
-        this._addListenerTarget(window);
-        this._observer && this._observer.observe(vm.el);
+        this.addListenerTarget(window);
+        this.observer && this.observer.observe(vm.el);
         if (vm.$el && vm.$el.parentNode) {
-          this._addListenerTarget(vm.$el.parentNode);
+          this.addListenerTarget(vm.$el.parentNode);
         }
       }
     }
@@ -121,17 +121,17 @@ export default function () {
      * @return
      */
     add(el, binding, vnode) {
-      if (this.ListenerQueue.some((item) => item.el === el)) {
+      if (this.listeners.some((item) => item.el === el)) {
         this.update(el, binding);
         return nextTick(this.lazyLoadHandler);
       }
 
-      const value = this._valueFormatter(binding.value);
+      const value = this.valueFormatter(binding.value);
       let { src } = value;
 
       nextTick(() => {
         src = getBestSelectionFromSrcset(el, this.options.scale) || src;
-        this._observer && this._observer.observe(el);
+        this.observer && this.observer.observe(el);
 
         const container = Object.keys(binding.modifiers)[0];
         let $parent;
@@ -156,16 +156,16 @@ export default function () {
           loading: value.loading,
           error: value.error,
           cors: value.cors,
-          elRenderer: this._elRenderer.bind(this),
+          elRenderer: this.elRenderer.bind(this),
           options: this.options,
-          imageCache: this._imageCache,
+          imageCache: this.imageCache,
         });
 
-        this.ListenerQueue.push(newListener);
+        this.listeners.push(newListener);
 
         if (inBrowser) {
-          this._addListenerTarget(window);
-          this._addListenerTarget($parent);
+          this.addListenerTarget(window);
+          this.addListenerTarget($parent);
         }
 
         this.lazyLoadHandler();
@@ -180,11 +180,11 @@ export default function () {
      * @return
      */
     update(el, binding, vnode) {
-      const value = this._valueFormatter(binding.value);
+      const value = this.valueFormatter(binding.value);
       let { src } = value;
       src = getBestSelectionFromSrcset(el, this.options.scale) || src;
 
-      const exist = this.ListenerQueue.find((item) => item.el === el);
+      const exist = this.listeners.find((item) => item.el === el);
       if (!exist) {
         this.add(el, binding, vnode);
       } else {
@@ -194,9 +194,9 @@ export default function () {
           loading: value.loading,
         });
       }
-      if (this._observer) {
-        this._observer.unobserve(el);
-        this._observer.observe(el);
+      if (this.observer) {
+        this.observer.unobserve(el);
+        this.observer.observe(el);
       }
       this.lazyLoadHandler();
       nextTick(() => this.lazyLoadHandler());
@@ -209,12 +209,12 @@ export default function () {
      */
     remove(el) {
       if (!el) return;
-      this._observer && this._observer.unobserve(el);
-      const existItem = this.ListenerQueue.find((item) => item.el === el);
+      this.observer && this.observer.unobserve(el);
+      const existItem = this.listeners.find((item) => item.el === el);
       if (existItem) {
-        this._removeListenerTarget(existItem.$parent);
-        this._removeListenerTarget(window);
-        remove(this.ListenerQueue, existItem);
+        this.removeListenerTarget(existItem.$parent);
+        this.removeListenerTarget(window);
+        remove(this.listeners, existItem);
         existItem.$destroy();
       }
     }
@@ -226,12 +226,12 @@ export default function () {
      */
     removeComponent(vm) {
       if (!vm) return;
-      remove(this.ListenerQueue, vm);
-      this._observer && this._observer.unobserve(vm.el);
+      remove(this.listeners, vm);
+      this.observer && this.observer.unobserve(vm.el);
       if (vm.$parent && vm.$el.parentNode) {
-        this._removeListenerTarget(vm.$el.parentNode);
+        this.removeListenerTarget(vm.$el.parentNode);
       }
-      this._removeListenerTarget(window);
+      this.removeListenerTarget(window);
     }
 
     setMode(mode) {
@@ -242,21 +242,21 @@ export default function () {
       this.mode = mode; // event or observer
 
       if (mode === modeType.event) {
-        if (this._observer) {
-          this.ListenerQueue.forEach((listener) => {
-            this._observer.unobserve(listener.el);
+        if (this.observer) {
+          this.listeners.forEach((listener) => {
+            this.observer.unobserve(listener.el);
           });
-          this._observer = null;
+          this.observer = null;
         }
 
-        this.TargetQueue.forEach((target) => {
-          this._initListen(target.el, true);
+        this.targets.forEach((target) => {
+          this.initListen(target.el, true);
         });
       } else {
-        this.TargetQueue.forEach((target) => {
-          this._initListen(target.el, false);
+        this.targets.forEach((target) => {
+          this.initListen(target.el, false);
         });
-        this._initIntersectionObserver();
+        this.initIntersectionObserver();
       }
     }
 
@@ -269,22 +269,22 @@ export default function () {
      * @param  {DOM} el listener target
      * @return
      */
-    _addListenerTarget(el) {
+    addListenerTarget(el) {
       if (!el) return;
-      let target = this.TargetQueue.find((target) => target.el === el);
+      let target = this.targets.find((target) => target.el === el);
       if (!target) {
         target = {
           el,
-          id: ++this.TargetIndex,
+          id: ++this.targetIndex,
           childrenCount: 1,
           listened: true,
         };
-        this.mode === modeType.event && this._initListen(target.el, true);
-        this.TargetQueue.push(target);
+        this.mode === modeType.event && this.initListen(target.el, true);
+        this.targets.push(target);
       } else {
         target.childrenCount++;
       }
-      return this.TargetIndex;
+      return this.targetIndex;
     }
 
     /*
@@ -292,13 +292,13 @@ export default function () {
      * @param  {DOM} el or window
      * @return
      */
-    _removeListenerTarget(el) {
-      this.TargetQueue.forEach((target, index) => {
+    removeListenerTarget(el) {
+      this.targets.forEach((target, index) => {
         if (target.el === el) {
           target.childrenCount--;
           if (!target.childrenCount) {
-            this._initListen(target.el, false);
-            this.TargetQueue.splice(index, 1);
+            this.initListen(target.el, false);
+            this.targets.splice(index, 1);
             target = null;
           }
         }
@@ -311,13 +311,13 @@ export default function () {
      * @param  {boolean} start flag
      * @return
      */
-    _initListen(el, start) {
+    initListen(el, start) {
       this.options.ListenEvents.forEach((evt) =>
         (start ? on : off)(el, evt, this.lazyLoadHandler)
       );
     }
 
-    _initEvent() {
+    initEvent() {
       this.Event = {
         listeners: {
           loading: [],
@@ -358,9 +358,9 @@ export default function () {
      * find nodes which in viewport and trigger load
      * @return
      */
-    _lazyLoadHandler() {
+    lazyLoadHandler() {
       const freeList = [];
-      this.ListenerQueue.forEach((listener) => {
+      this.listeners.forEach((listener) => {
         if (!listener.el || !listener.el.parentNode) {
           freeList.push(listener);
         }
@@ -369,7 +369,7 @@ export default function () {
         listener.load();
       });
       freeList.forEach((item) => {
-        remove(this.ListenerQueue, item);
+        remove(this.listeners, item);
         item.$destroy();
       });
     }
@@ -379,19 +379,19 @@ export default function () {
      * set mode to observer
      * @return
      */
-    _initIntersectionObserver() {
+    initIntersectionObserver() {
       if (!hasIntersectionObserver) {
         return;
       }
 
-      this._observer = new IntersectionObserver(
-        this._observerHandler.bind(this),
+      this.observer = new IntersectionObserver(
+        this.observerHandler.bind(this),
         this.options.observerOptions
       );
 
-      if (this.ListenerQueue.length) {
-        this.ListenerQueue.forEach((listener) => {
-          this._observer.observe(listener.el);
+      if (this.listeners.length) {
+        this.listeners.forEach((listener) => {
+          this.observer.observe(listener.el);
         });
       }
     }
@@ -400,13 +400,13 @@ export default function () {
      * init IntersectionObserver
      * @return
      */
-    _observerHandler(entries) {
+    observerHandler(entries) {
       entries.forEach((entry) => {
         if (entry.isIntersecting) {
-          this.ListenerQueue.forEach((listener) => {
+          this.listeners.forEach((listener) => {
             if (listener.el === entry.target) {
               if (listener.state.loaded)
-                return this._observer.unobserve(listener.el);
+                return this.observer.unobserve(listener.el);
               listener.load();
             }
           });
@@ -421,7 +421,7 @@ export default function () {
      * @param  {bool} inCache  is rendered from cache
      * @return
      */
-    _elRenderer(listener, state, cache) {
+    elRenderer(listener, state, cache) {
       if (!listener.el) return;
       const { el, bindType } = listener;
 
@@ -463,7 +463,7 @@ export default function () {
      * @param {string} image's src
      * @return {object} image's loading, loaded, error url
      */
-    _valueFormatter(value) {
+    valueFormatter(value) {
       let src = value;
       let { loading, error } = this.options;
 
diff --git a/packages/vant/src/lazyload/vue-lazyload/listener.js b/packages/vant/src/lazyload/vue-lazyload/listener.js
index f35fa6ea7..cca90d029 100644
--- a/packages/vant/src/lazyload/vue-lazyload/listener.js
+++ b/packages/vant/src/lazyload/vue-lazyload/listener.js
@@ -30,7 +30,7 @@ export default class ReactiveListener {
 
     this.$parent = $parent;
     this.elRenderer = elRenderer;
-    this._imageCache = imageCache;
+    this.imageCache = imageCache;
     this.performanceData = {
       loadStart: 0,
       loadEnd: 0,
@@ -156,7 +156,7 @@ export default class ReactiveListener {
       return;
     }
     if (this.state.rendered && this.state.loaded) return;
-    if (this._imageCache.has(this.src)) {
+    if (this.imageCache.has(this.src)) {
       this.state.loaded = true;
       this.render('loaded', true);
       this.state.rendered = true;
@@ -182,7 +182,7 @@ export default class ReactiveListener {
           this.record('loadEnd');
           this.render('loaded', false);
           this.state.rendered = true;
-          this._imageCache.add(this.src);
+          this.imageCache.add(this.src);
           onFinish();
         },
         (err) => {
diff --git a/packages/vant/src/lazyload/vue-lazyload/util.js b/packages/vant/src/lazyload/vue-lazyload/util.js
index 04e2870de..6929b89c7 100644
--- a/packages/vant/src/lazyload/vue-lazyload/util.js
+++ b/packages/vant/src/lazyload/vue-lazyload/util.js
@@ -139,8 +139,7 @@ export const loadImageAsync = (item, resolve, reject) => {
   const image = new Image();
 
   if (!item || !item.src) {
-    const err = new Error('image src is required');
-    return reject(err);
+    return reject(new Error('image src is required'));
   }
 
   image.src = item.src;
@@ -163,22 +162,22 @@ export class ImageCache {
     this.options = {
       max: max || 100,
     };
-    this._caches = [];
+    this.caches = [];
   }
 
   has(key) {
-    return this._caches.indexOf(key) > -1;
+    return this.caches.indexOf(key) > -1;
   }
 
   add(key) {
     if (this.has(key)) return;
-    this._caches.push(key);
-    if (this._caches.length > this.options.max) {
+    this.caches.push(key);
+    if (this.caches.length > this.options.max) {
       this.free();
     }
   }
 
   free() {
-    this._caches.shift();
+    this.caches.shift();
   }
 }
diff --git a/packages/vant/src/list/List.tsx b/packages/vant/src/list/List.tsx
index ae3cb9ce7..3b1a3fcee 100644
--- a/packages/vant/src/list/List.tsx
+++ b/packages/vant/src/list/List.tsx
@@ -139,10 +139,7 @@ export default defineComponent({
       }
     };
 
-    watch(
-      [() => props.loading, () => props.finished, () => props.error],
-      check
-    );
+    watch(() => [props.loading, props.finished, props.error], check);
 
     if (tabStatus) {
       watch(tabStatus, (tabActive) => {
diff --git a/packages/vant/src/number-keyboard/NumberKeyboardKey.tsx b/packages/vant/src/number-keyboard/NumberKeyboardKey.tsx
index 88d820ac4..b1ca0e245 100644
--- a/packages/vant/src/number-keyboard/NumberKeyboardKey.tsx
+++ b/packages/vant/src/number-keyboard/NumberKeyboardKey.tsx
@@ -1,5 +1,5 @@
 import { ref, PropType, defineComponent } from 'vue';
-import { numericProp, createNamespace } from '../utils';
+import { numericProp, createNamespace, preventDefault } from '../utils';
 import { useTouch } from '../composables/use-touch';
 import { Loading } from '../loading';
 
@@ -61,7 +61,7 @@ export default defineComponent({
         // eliminate tap delay on safari
         // see: https://github.com/youzan/vant/issues/6836
         if (!slots.default) {
-          event.preventDefault();
+          preventDefault(event);
         }
         active.value = false;
         emit('press', props.text, props.type);
diff --git a/packages/vant/src/stepper/Stepper.tsx b/packages/vant/src/stepper/Stepper.tsx
index 2d4026d0d..2e4fc6d18 100644
--- a/packages/vant/src/stepper/Stepper.tsx
+++ b/packages/vant/src/stepper/Stepper.tsx
@@ -247,14 +247,14 @@ export default defineComponent({
       // fix mobile safari page scroll down issue
       // see: https://github.com/youzan/vant/issues/7690
       if (props.disableInput) {
-        event.preventDefault();
+        preventDefault(event);
       }
     };
 
-    const createListeners = (type: 'plus' | 'minus') => ({
+    const createListeners = (type: typeof actionType) => ({
       onClick: (event: MouseEvent) => {
         // disable double tap scrolling on mobile safari
-        event.preventDefault();
+        preventDefault(event);
         actionType = type;
         onChange();
       },
@@ -267,12 +267,7 @@ export default defineComponent({
     });
 
     watch(
-      [
-        () => props.max,
-        () => props.min,
-        () => props.integer,
-        () => props.decimalLength,
-      ],
+      () => [props.max, props.min, props.integer, props.decimalLength],
       check
     );
 
diff --git a/packages/vant/src/sticky/test/index.spec.tsx b/packages/vant/src/sticky/test/index.spec.tsx
index d12c59a76..c17215fdd 100644
--- a/packages/vant/src/sticky/test/index.spec.tsx
+++ b/packages/vant/src/sticky/test/index.spec.tsx
@@ -1,6 +1,6 @@
 import { nextTick, ref } from 'vue';
 import { VueWrapper } from '@vue/test-utils';
-import { mockScrollTop, mount } from '../../../test';
+import { mockScrollTop, trigger, mount } from '../../../test';
 import { Sticky } from '..';
 import { ComponentInstance } from '../../utils';
 
@@ -130,6 +130,7 @@ test('should allow to using offset-top prop with rem unit', async () => {
 
 test('should allow to using offset-top prop with vw unit', async () => {
   Object.defineProperty(window, 'innerWidth', { value: 300 });
+  trigger(window, 'resize');
 
   const wrapper = mount({
     render() {
diff --git a/packages/vant/src/swipe/Swipe.tsx b/packages/vant/src/swipe/Swipe.tsx
index b142dd175..ca17bf83b 100644
--- a/packages/vant/src/swipe/Swipe.tsx
+++ b/packages/vant/src/swipe/Swipe.tsx
@@ -19,18 +19,15 @@ import {
   isHidden,
   truthProp,
   numericProp,
+  windowWidth,
+  windowHeight,
   preventDefault,
   createNamespace,
   makeNumericProp,
 } from '../utils';
 
 // Composables
-import {
-  doubleRaf,
-  useChildren,
-  useWindowSize,
-  usePageVisibility,
-} from '@vant/use';
+import { doubleRaf, useChildren, usePageVisibility } from '@vant/use';
 import { useTouch } from '../composables/use-touch';
 import { useExpose } from '../composables/use-expose';
 import { onPopupReopen } from '../composables/on-popup-reopen';
@@ -78,7 +75,6 @@ export default defineComponent({
     });
 
     const touch = useTouch();
-    const windowSize = useWindowSize();
     const { children, linkChildren } = useChildren(SWIPE_KEY);
 
     const count = computed(() => children.length);
@@ -413,7 +409,7 @@ export default defineComponent({
 
     watch(count, () => initialize(state.active));
     watch(() => props.autoplay, autoplay);
-    watch([windowSize.width, windowSize.height], resize);
+    watch([windowWidth, windowHeight], resize);
     watch(usePageVisibility(), (visible) => {
       if (visible === 'visible') {
         autoplay();
diff --git a/packages/vant/src/tabs/Tabs.tsx b/packages/vant/src/tabs/Tabs.tsx
index f3e4e424c..15151665a 100644
--- a/packages/vant/src/tabs/Tabs.tsx
+++ b/packages/vant/src/tabs/Tabs.tsx
@@ -24,6 +24,7 @@ import {
   truthProp,
   numericProp,
   Interceptor,
+  windowWidth,
   getElementTop,
   makeStringProp,
   callInterceptor,
@@ -39,7 +40,6 @@ import { scrollLeftTo, scrollTopTo } from './utils';
 import {
   useRect,
   useChildren,
-  useWindowSize,
   useScrollParent,
   useEventListener,
   onMountedOrActivated,
@@ -123,7 +123,6 @@ export default defineComponent({
     const navRef = ref<HTMLElement>();
     const wrapRef = ref<HTMLElement>();
 
-    const windowSize = useWindowSize();
     const scroller = useScrollParent(root);
     const [titleRefs, setTitleRefs] = useRefs<ComponentInstance>();
     const { children, linkChildren } = useChildren(TABS_KEY);
@@ -408,7 +407,7 @@ export default defineComponent({
       );
     };
 
-    watch([() => props.color, windowSize.width], setLine);
+    watch([() => props.color, windowWidth], setLine);
 
     watch(
       () => props.active,
diff --git a/packages/vant/src/utils/dom.ts b/packages/vant/src/utils/dom.ts
index 74d9e0a1c..bc618321a 100644
--- a/packages/vant/src/utils/dom.ts
+++ b/packages/vant/src/utils/dom.ts
@@ -1,4 +1,4 @@
-import { useRect } from '@vant/use';
+import { useRect, useWindowSize } from '@vant/use';
 import { unref, Ref } from 'vue';
 import { isIOS as checkIsIOS } from './validate';
 
@@ -84,3 +84,5 @@ export function isHidden(
 
   return hidden || parentHidden;
 }
+
+export const { width: windowWidth, height: windowHeight } = useWindowSize();
diff --git a/packages/vant/src/utils/format.ts b/packages/vant/src/utils/format.ts
index 597caffe8..6a2628b2c 100644
--- a/packages/vant/src/utils/format.ts
+++ b/packages/vant/src/utils/format.ts
@@ -1,6 +1,6 @@
 import { CSSProperties } from 'vue';
-import { useWindowSize } from '@vant/use';
 import { inBrowser } from './basic';
+import { windowWidth, windowHeight } from './dom';
 import { isDef, isNumeric } from './validate';
 
 export function addUnit(value?: string | number): string | undefined {
@@ -51,15 +51,13 @@ function convertRem(value: string) {
 }
 
 function convertVw(value: string) {
-  const { width } = useWindowSize();
   value = value.replace(/vw/g, '');
-  return (+value * width.value) / 100;
+  return (+value * windowWidth.value) / 100;
 }
 
 function convertVh(value: string) {
-  const { height } = useWindowSize();
   value = value.replace(/vh/g, '');
-  return (+value * height.value) / 100;
+  return (+value * windowHeight.value) / 100;
 }
 
 export function unitToPx(value: string | number): number {
diff --git a/packages/vant/src/utils/test/index.spec.ts b/packages/vant/src/utils/test/index.spec.ts
index 2f2bdc15b..428fa1d70 100644
--- a/packages/vant/src/utils/test/index.spec.ts
+++ b/packages/vant/src/utils/test/index.spec.ts
@@ -3,6 +3,7 @@ import { deepClone } from '../deep-clone';
 import { deepAssign } from '../deep-assign';
 import { isDef, isMobile, isNumeric } from '../validate';
 import { addUnit, unitToPx, camelize, formatNumber } from '../format';
+import { trigger } from '../../../test';
 
 test('deepClone', () => {
   const a = { foo: 0 };
@@ -110,6 +111,7 @@ test('unitToPx', () => {
 
   Object.defineProperty(window, 'innerWidth', { value: 100 });
   Object.defineProperty(window, 'innerHeight', { value: 200 });
+  trigger(window, 'resize');
 
   expect(unitToPx(0)).toEqual(0);
   expect(unitToPx(10)).toEqual(10);