diff --git a/packages/vant/src/sticky/Sticky.tsx b/packages/vant/src/sticky/Sticky.tsx
index 47c2ab5a0..eab933d47 100644
--- a/packages/vant/src/sticky/Sticky.tsx
+++ b/packages/vant/src/sticky/Sticky.tsx
@@ -7,6 +7,7 @@ import {
   type PropType,
   type CSSProperties,
   type ExtractPropTypes,
+  nextTick,
 } from 'vue';
 
 // Utils
@@ -20,6 +21,8 @@ import {
   makeStringProp,
   makeNumericProp,
   createNamespace,
+  windowWidth,
+  windowHeight,
 } from '../utils';
 
 // Composables
@@ -56,12 +59,16 @@ export default defineComponent({
       height: 0, // root height
       transform: 0,
     });
+    const isReset = ref(false);
 
     const offset = computed(() =>
       unitToPx(props.position === 'top' ? props.offsetTop : props.offsetBottom)
     );
 
     const rootStyle = computed<CSSProperties | undefined>(() => {
+      if (isReset.value) {
+        return;
+      }
       const { fixed, height, width } = state;
       if (fixed) {
         return {
@@ -72,7 +79,7 @@ export default defineComponent({
     });
 
     const stickyStyle = computed<CSSProperties | undefined>(() => {
-      if (!state.fixed) {
+      if (!state.fixed || isReset.value) {
         return;
       }
 
@@ -146,9 +153,25 @@ export default defineComponent({
     });
     useVisibilityChange(root, onScroll);
 
+    watch([windowWidth, windowHeight], () => {
+      if (!root.value || isHidden(root) || !state.fixed) {
+        return;
+      }
+      isReset.value = true;
+      nextTick(() => {
+        const rootRect = useRect(root);
+        state.width = rootRect.width;
+        state.height = rootRect.height;
+        isReset.value = false;
+      });
+    });
+
     return () => (
       <div ref={root} style={rootStyle.value}>
-        <div class={bem({ fixed: state.fixed })} style={stickyStyle.value}>
+        <div
+          class={bem({ fixed: state.fixed && !isReset.value })}
+          style={stickyStyle.value}
+        >
           {slots.default?.()}
         </div>
       </div>
diff --git a/packages/vant/src/sticky/test/__snapshots__/index.spec.tsx.snap b/packages/vant/src/sticky/test/__snapshots__/index.spec.tsx.snap
index 32d6a2b7c..f6c40491d 100644
--- a/packages/vant/src/sticky/test/__snapshots__/index.spec.tsx.snap
+++ b/packages/vant/src/sticky/test/__snapshots__/index.spec.tsx.snap
@@ -82,6 +82,34 @@ exports[`should sticky inside container when using container prop 2`] = `
 </div>
 `;
 
+exports[`should sticky resize or orientationchange reset root height and width 1`] = `
+<div style="width: 375px; height: 20px;">
+  <div class="van-sticky van-sticky--fixed"
+       style="width: 375px; height: 20px; top: 0px;"
+  >
+    <div class="content"
+         style="height: 20px;"
+    >
+      Content
+    </div>
+  </div>
+</div>
+`;
+
+exports[`should sticky resize or orientationchange reset root height and width 2`] = `
+<div style="width: 677px; height: 20px;">
+  <div class="van-sticky van-sticky--fixed"
+       style="width: 677px; height: 20px; top: 0px;"
+  >
+    <div class="content"
+         style="height: 20px;"
+    >
+      Content
+    </div>
+  </div>
+</div>
+`;
+
 exports[`should sticky to bottom after scrolling 1`] = `
 <div style="height: 10px;">
   <div class="van-sticky van-sticky--fixed"
diff --git a/packages/vant/src/sticky/test/index.spec.tsx b/packages/vant/src/sticky/test/index.spec.tsx
index c17215fdd..fcbca6c42 100644
--- a/packages/vant/src/sticky/test/index.spec.tsx
+++ b/packages/vant/src/sticky/test/index.spec.tsx
@@ -1,5 +1,5 @@
 import { nextTick, ref } from 'vue';
-import { VueWrapper } from '@vue/test-utils';
+import { VueWrapper, flushPromises } from '@vue/test-utils';
 import { mockScrollTop, trigger, mount } from '../../../test';
 import { Sticky } from '..';
 import { ComponentInstance } from '../../utils';
@@ -353,3 +353,41 @@ test('should emit change event when sticky status changed', async () => {
 
   restore();
 });
+
+test('should sticky resize or orientationchange reset root height and width', async () => {
+  const wrapper = mount({
+    render() {
+      return (
+        <Sticky>
+          <div class="content" style="height:20px">
+            Content
+          </div>
+        </Sticky>
+      );
+    },
+  });
+
+  window.innerWidth = 375;
+  const mockStickyRect = jest
+    .spyOn(wrapper.element, 'getBoundingClientRect')
+    .mockReturnValue({
+      top: -100,
+      bottom: -90,
+      width: window.innerWidth,
+      height: 20,
+    } as DOMRect);
+
+  await mockScrollTop(100);
+  expect(wrapper.html()).toMatchSnapshot();
+
+  window.innerWidth = 677;
+  mockStickyRect.mockReturnValue({
+    width: window.innerWidth,
+    height: 20,
+  } as DOMRect);
+  await trigger(window, 'resize');
+  await flushPromises();
+  expect(wrapper.html()).toMatchSnapshot();
+
+  mockStickyRect.mockRestore();
+});