diff --git a/packages/vant/src/action-sheet/test/index.spec.ts b/packages/vant/src/action-sheet/test/index.spec.ts
index 1eb5195bb..469de0b92 100644
--- a/packages/vant/src/action-sheet/test/index.spec.ts
+++ b/packages/vant/src/action-sheet/test/index.spec.ts
@@ -120,7 +120,7 @@ test('should allow to use the teleport prop', () => {
   expect(root.querySelector('.van-action-sheet')).toBeTruthy();
 });
 
-test('should have "van-popup--round" class when setting the round prop', () => {
+test('should have "van-popup--round" class when setting the round prop', async () => {
   const wrapper = mount(ActionSheet, {
     props: {
       show: true,
@@ -129,6 +129,9 @@ test('should have "van-popup--round" class when setting the round prop', () => {
   });
 
   expect(wrapper.find('.van-popup--round').exists()).toBeTruthy();
+
+  await wrapper.setProps({ round: false });
+  expect(wrapper.find('.van-popup--round').exists()).toBeFalsy();
 });
 
 test('should change option color when using the color prop', () => {
diff --git a/packages/vant/src/share-sheet/README.md b/packages/vant/src/share-sheet/README.md
index c7558f9a8..c5eeb09ef 100644
--- a/packages/vant/src/share-sheet/README.md
+++ b/packages/vant/src/share-sheet/README.md
@@ -174,6 +174,7 @@ export default {
 | cancel-text | Cancel button text | _string_ | `'Cancel'` |
 | description | Description | _string_ | - |
 | duration | Transition duration, unit second | _number \| string_ | `0.3` |
+| round `v3.2.6` | Whether to show round corner | _boolean_ | `true` |
 | overlay | Whether to show overlay | _boolean_ | `true` |
 | overlay-class | Custom overlay class | _string \| Array \| object_ | - |
 | overlay-style | Custom overlay style | _object_ | - |
diff --git a/packages/vant/src/share-sheet/README.zh-CN.md b/packages/vant/src/share-sheet/README.zh-CN.md
index 485fcb190..9bc052e68 100644
--- a/packages/vant/src/share-sheet/README.zh-CN.md
+++ b/packages/vant/src/share-sheet/README.zh-CN.md
@@ -186,6 +186,7 @@ export default {
 | cancel-text | 取消按钮文字，传入空字符串可以隐藏按钮 | _string_ | `'取消'` |
 | description | 标题下方的辅助描述文字 | _string_ | - |
 | duration | 动画时长，单位秒，设置为 0 可以禁用动画 | _number \| string_ | `0.3` |
+| round `v3.2.6` | 是否显示圆角 | _boolean_ | `true` |
 | overlay | 是否显示遮罩层 | _boolean_ | `true` |
 | overlay-class | 自定义遮罩层类名 | _string \| Array \| object_ | - |
 | overlay-style | 自定义遮罩层样式 | _object_ | - |
diff --git a/packages/vant/src/share-sheet/ShareSheet.tsx b/packages/vant/src/share-sheet/ShareSheet.tsx
index 8e9f15bfe..a0b5026a1 100644
--- a/packages/vant/src/share-sheet/ShareSheet.tsx
+++ b/packages/vant/src/share-sheet/ShareSheet.tsx
@@ -35,6 +35,7 @@ const PRESET_ICONS = [
 
 const popupKeys = [
   ...popupSharedPropKeys,
+  'round',
   'closeOnPopstate',
   'safeAreaInsetBottom',
 ] as const;
@@ -53,6 +54,7 @@ export default defineComponent({
 
   props: extend({}, popupSharedProps, {
     title: String,
+    round: truthProp,
     options: makeArrayProp<ShareSheetOption | ShareSheetOption[]>(),
     cancelText: String,
     description: String,
@@ -136,7 +138,6 @@ export default defineComponent({
 
     return () => (
       <Popup
-        round
         class={bem()}
         position="bottom"
         {...pick(props, popupKeys)}
diff --git a/packages/vant/src/share-sheet/test/index.spec.ts b/packages/vant/src/share-sheet/test/index.spec.ts
index 5e38dd805..8d961c621 100644
--- a/packages/vant/src/share-sheet/test/index.spec.ts
+++ b/packages/vant/src/share-sheet/test/index.spec.ts
@@ -117,3 +117,17 @@ test('should render cancel slot correctly', async () => {
 
   expect(wrapper.find('.van-share-sheet__cancel').html()).toMatchSnapshot();
 });
+
+test('should have "van-popup--round" class when setting the round prop', async () => {
+  const wrapper = mount(ShareSheet, {
+    props: {
+      show: true,
+      round: true,
+    },
+  });
+
+  expect(wrapper.find('.van-popup--round').exists()).toBeTruthy();
+
+  await wrapper.setProps({ round: false });
+  expect(wrapper.find('.van-popup--round').exists()).toBeFalsy();
+});