diff --git a/packages/components/common/Portal.tsx b/packages/components/common/Portal.tsx
index 71d8270b76..b57035484b 100644
--- a/packages/components/common/Portal.tsx
+++ b/packages/components/common/Portal.tsx
@@ -1,10 +1,12 @@
-import React, { forwardRef, useMemo, useImperativeHandle } from 'react';
+import React, { forwardRef, useImperativeHandle, useMemo } from 'react';
 import { createPortal } from 'react-dom';
-import { AttachNode, AttachNodeReturnValue } from '../common';
+
 import { canUseDocument } from '../_util/dom';
 import useConfig from '../hooks/useConfig';
 import useIsomorphicLayoutEffect from '../hooks/useLayoutEffect';
 
+import type { AttachNode, AttachNodeReturnValue } from '../common';
+
 export interface PortalProps {
   /**
    * 指定挂载的 HTML 节点, false 为挂载在 body
@@ -15,6 +17,7 @@ export interface PortalProps {
    */
   triggerNode?: HTMLElement;
   children: React.ReactNode;
+  style?: React.CSSProperties;
 }
 
 export function getAttach(attach: PortalProps['attach'], triggerNode?: HTMLElement): AttachNodeReturnValue {
@@ -38,14 +41,18 @@ export function getAttach(attach: PortalProps['attach'], triggerNode?: HTMLEleme
 }
 
 const Portal = forwardRef((props: PortalProps, ref) => {
-  const { attach, children, triggerNode } = props;
+  const { attach, children, triggerNode, style } = props;
   const { classPrefix } = useConfig();
 
   const container = useMemo(() => {
     if (!canUseDocument) return null;
     const el = document.createElement('div');
     el.className = `${classPrefix}-portal-wrapper`;
+    if (typeof style === 'object') {
+      Object.assign(el.style, style);
+    }
     return el;
+    // eslint-disable-next-line react-hooks/exhaustive-deps
   }, [classPrefix]);
 
   useIsomorphicLayoutEffect(() => {
diff --git a/packages/components/date-picker/base/Header.tsx b/packages/components/date-picker/base/Header.tsx
index 6046bce980..e0685030e8 100644
--- a/packages/components/date-picker/base/Header.tsx
+++ b/packages/components/date-picker/base/Header.tsx
@@ -1,9 +1,9 @@
-import React, { useState, useMemo, useEffect, useCallback, useRef } from 'react';
-import { useLocaleReceiver } from '../../locale/LocalReceiver';
+import React, { useCallback, useEffect, useMemo, useRef, useState } from 'react';
 import useConfig from '../../hooks/useConfig';
+import { useLocaleReceiver } from '../../locale/LocalReceiver';
+import { PaginationMini, type TdPaginationMiniProps } from '../../pagination';
 import Select from '../../select';
-import { TdDatePickerProps } from '../type';
-import { PaginationMini, TdPaginationMiniProps } from '../../pagination';
+import type { TdDatePickerProps } from '../type';
 
 export interface DatePickerHeaderProps extends Pick<TdDatePickerProps, 'mode'> {
   year?: number;
@@ -210,7 +210,11 @@ const DatePickerHeader = (props: DatePickerHeaderProps) => {
           }}
           popupProps={{
             onScroll: handleScroll,
-            updateScrollTop: handleUpdateScrollTop,
+            updateScrollTop: (el) => {
+              setTimeout(() => {
+                handleUpdateScrollTop(el);
+              }, 0);
+            },
             attach: (triggerElement: HTMLElement) => triggerElement.parentNode as HTMLElement,
             overlayClassName: `${headerClassName}-controller-year-popup`,
           }}
diff --git a/packages/components/guide/__tests__/__snapshots__/vitest-guide.test.jsx.snap b/packages/components/guide/__tests__/__snapshots__/vitest-guide.test.jsx.snap
index eb9a97b7a4..e1a685bb66 100644
--- a/packages/components/guide/__tests__/__snapshots__/vitest-guide.test.jsx.snap
+++ b/packages/components/guide/__tests__/__snapshots__/vitest-guide.test.jsx.snap
@@ -113,6 +113,7 @@ exports[`Guide Component > GuideStep.body works fine 1`] = `
   />
   <div
     class="t-portal-wrapper appear appear-active"
+    style="position: absolute; width: 100%;"
   >
     <div
       class="t-popup t-guide__popup t-popup--animation-enter-active t-popup--animation-enter-to"
@@ -290,6 +291,7 @@ exports[`Guide Component > GuideStep.children works fine 1`] = `
   />
   <div
     class="t-portal-wrapper appear appear-active"
+    style="position: absolute; width: 100%;"
   >
     <div
       class="t-popup t-guide__popup t-popup--animation-enter-active t-popup--animation-enter-to"
@@ -427,6 +429,7 @@ exports[`Guide Component > GuideStep.content works fine 1`] = `
   />
   <div
     class="t-portal-wrapper appear appear-active"
+    style="position: absolute; width: 100%;"
   >
     <div
       class="t-popup t-guide__popup t-popup--animation-enter-active t-popup--animation-enter-to"
@@ -571,6 +574,7 @@ exports[`Guide Component > GuideStep.highlightContent works fine 1`] = `
   />
   <div
     class="t-portal-wrapper appear appear-active"
+    style="position: absolute; width: 100%;"
   >
     <div
       class="t-popup t-guide__popup t-popup--animation-enter-active t-popup--animation-enter-to"
@@ -940,6 +944,7 @@ exports[`Guide Component > GuideStep.placement is equal to bottom-left 1`] = `
   />
   <div
     class="t-portal-wrapper appear appear-active"
+    style="position: absolute; width: 100%;"
   >
     <div
       class="t-popup t-guide__popup t-popup--animation-enter-active t-popup--animation-enter-to"
@@ -1113,6 +1118,7 @@ exports[`Guide Component > GuideStep.stepOverlayClass is equal to t-test-guide-s
   />
   <div
     class="t-portal-wrapper appear appear-active"
+    style="position: absolute; width: 100%;"
   >
     <div
       class="t-popup t-guide__popup t-test-guide-step-overlay t-popup--animation-enter-active t-popup--animation-enter-to"
@@ -1286,6 +1292,7 @@ exports[`Guide Component > GuideStep.title works fine 1`] = `
   />
   <div
     class="t-portal-wrapper appear appear-active"
+    style="position: absolute; width: 100%;"
   >
     <div
       class="t-popup t-guide__popup t-popup--animation-enter-active t-popup--animation-enter-to"
diff --git a/packages/components/popup/Popup.tsx b/packages/components/popup/Popup.tsx
index 993106979f..3b62310c8b 100644
--- a/packages/components/popup/Popup.tsx
+++ b/packages/components/popup/Popup.tsx
@@ -1,8 +1,10 @@
+import React, { forwardRef, useEffect, useImperativeHandle, useMemo, useRef, useState } from 'react';
+import { CSSTransition } from 'react-transition-group';
+
 import { Placement, type Options } from '@popperjs/core';
 import classNames from 'classnames';
 import { debounce, isFunction } from 'lodash-es';
-import React, { forwardRef, useEffect, useImperativeHandle, useMemo, useRef, useState } from 'react';
-import { CSSTransition } from 'react-transition-group';
+
 import { getRefDom } from '../_util/ref';
 import { getCssVarsValue } from '../_util/style';
 import Portal from '../common/Portal';
@@ -16,9 +18,10 @@ import usePopper from '../hooks/usePopper';
 import useWindowSize from '../hooks/useWindowSize';
 import { popupDefaultProps } from './defaultProps';
 import useTrigger from './hooks/useTrigger';
-import type { TdPopupProps } from './type';
 import { getTransitionParams } from './utils/transition';
 
+import type { TdPopupProps } from './type';
+
 export interface PopupProps extends TdPopupProps {
   // 是否触发展开收起动画，内部下拉式组件使用
   expandAnimation?: boolean;
@@ -115,11 +118,12 @@ const Popup = forwardRef<PopupRef, PopupProps>((originalProps, ref) => {
     placement: popperPlacement,
     ...popperOptions,
   });
+
   /**
    * 是否启用 popper.js 的 arrow 修饰符
    * - 会自动根据属性 data-popper-arrow 来识别箭头元素
    * - 从而支持使用 padding 调整箭头位置
-   * @ see https://popper.js.org/docs/v2/modifiers/arrow/
+   * @docs https://popper.js.org/docs/v2/modifiers/arrow/
    */
   const hasArrowModifier = popperOptions?.modifiers?.some((modifier) => modifier.name === 'arrow');
   const { styles, attributes } = popperRef.current;
@@ -191,7 +195,12 @@ const Popup = forwardRef<PopupRef, PopupProps>((originalProps, ref) => {
       onEnter={handleEnter}
       onExited={handleExited}
     >
-      <Portal triggerNode={getRefDom(triggerRef)} attach={popupAttach} ref={portalRef}>
+      <Portal
+        ref={portalRef}
+        triggerNode={getRefDom(triggerRef)}
+        attach={popupAttach}
+        style={{ position: 'absolute', width: '100%' }}
+      >
         <CSSTransition
           appear
           timeout={0}
diff --git a/packages/components/popup/_example/container.tsx b/packages/components/popup/_example/container.tsx
index 96db88702a..868aea9daf 100644
--- a/packages/components/popup/_example/container.tsx
+++ b/packages/components/popup/_example/container.tsx
@@ -3,7 +3,7 @@ import { Button, Popup, Space } from 'tdesign-react';
 
 export default function Attach() {
   return (
-    <Space className='attach-container' style={{ position: 'relative' }}>
+    <Space className='attach-container'>
       <Popup trigger="click" content="触发元素的父元素是组件根元素，通过 CSS Selector 定义" attach=".attach-container">
         <Button>点击查看我的父元素(CSS Selector)</Button>
       </Popup>
diff --git a/test/snap/__snapshots__/csr.test.jsx.snap b/test/snap/__snapshots__/csr.test.jsx.snap
index 6e7c6b6946..b021f76f17 100644
--- a/test/snap/__snapshots__/csr.test.jsx.snap
+++ b/test/snap/__snapshots__/csr.test.jsx.snap
@@ -78172,7 +78172,7 @@ exports[`csr snapshot test > csr test packages/components/popup/_example/contain
 <div>
   <div
     class="t-space attach-container t-space-horizontal"
-    style="position: relative; gap: 16px;"
+    style="gap: 16px;"
   >
     <div
       class="t-space-item"
@@ -150064,7 +150064,7 @@ exports[`ssr snapshot test > ssr test packages/components/popconfirm/_example/th
 
 exports[`ssr snapshot test > ssr test packages/components/popup/_example/base.tsx 1`] = `"<button type="button" class="t-button t-button--theme-primary t-button--variant-base"><span class="t-button__text">Hover me</span></button>"`;
 
-exports[`ssr snapshot test > ssr test packages/components/popup/_example/container.tsx 1`] = `"<div style="position:relative;gap:16px" class="t-space attach-container t-space-horizontal"><div class="t-space-item"><button type="button" class="t-button t-button--theme-primary t-button--variant-base"><span class="t-button__text">点击查看我的父元素(CSS Selector)</span></button></div><div class="t-space-item"><button type="button" class="t-button t-button--theme-primary t-button--variant-base"><span class="t-button__text">点击查看我的父元素(Function)</span></button></div></div>"`;
+exports[`ssr snapshot test > ssr test packages/components/popup/_example/container.tsx 1`] = `"<div style="gap:16px" class="t-space attach-container t-space-horizontal"><div class="t-space-item"><button type="button" class="t-button t-button--theme-primary t-button--variant-base"><span class="t-button__text">点击查看我的父元素(CSS Selector)</span></button></div><div class="t-space-item"><button type="button" class="t-button t-button--theme-primary t-button--variant-base"><span class="t-button__text">点击查看我的父元素(Function)</span></button></div></div>"`;
 
 exports[`ssr snapshot test > ssr test packages/components/popup/_example/destroy.tsx 1`] = `"<button type="button" class="t-button t-button--theme-primary t-button--variant-base"><span class="t-button__text">Hover me</span></button>"`;
 
diff --git a/test/snap/__snapshots__/ssr.test.jsx.snap b/test/snap/__snapshots__/ssr.test.jsx.snap
index fdecc07bb4..e34c9f5859 100644
--- a/test/snap/__snapshots__/ssr.test.jsx.snap
+++ b/test/snap/__snapshots__/ssr.test.jsx.snap
@@ -732,7 +732,7 @@ exports[`ssr snapshot test > ssr test packages/components/popconfirm/_example/th
 
 exports[`ssr snapshot test > ssr test packages/components/popup/_example/base.tsx 1`] = `"<button type="button" class="t-button t-button--theme-primary t-button--variant-base"><span class="t-button__text">Hover me</span></button>"`;
 
-exports[`ssr snapshot test > ssr test packages/components/popup/_example/container.tsx 1`] = `"<div style="position:relative;gap:16px" class="t-space attach-container t-space-horizontal"><div class="t-space-item"><button type="button" class="t-button t-button--theme-primary t-button--variant-base"><span class="t-button__text">点击查看我的父元素(CSS Selector)</span></button></div><div class="t-space-item"><button type="button" class="t-button t-button--theme-primary t-button--variant-base"><span class="t-button__text">点击查看我的父元素(Function)</span></button></div></div>"`;
+exports[`ssr snapshot test > ssr test packages/components/popup/_example/container.tsx 1`] = `"<div style="gap:16px" class="t-space attach-container t-space-horizontal"><div class="t-space-item"><button type="button" class="t-button t-button--theme-primary t-button--variant-base"><span class="t-button__text">点击查看我的父元素(CSS Selector)</span></button></div><div class="t-space-item"><button type="button" class="t-button t-button--theme-primary t-button--variant-base"><span class="t-button__text">点击查看我的父元素(Function)</span></button></div></div>"`;
 
 exports[`ssr snapshot test > ssr test packages/components/popup/_example/destroy.tsx 1`] = `"<button type="button" class="t-button t-button--theme-primary t-button--variant-base"><span class="t-button__text">Hover me</span></button>"`;