diff --git a/packages/frontend/core/src/mobile/pages/workspace/detail/journal-date-picker/constants.ts b/packages/frontend/core/src/mobile/pages/workspace/detail/journal-date-picker/constants.ts
index cefc5df7af..c4822ea340 100644
--- a/packages/frontend/core/src/mobile/pages/workspace/detail/journal-date-picker/constants.ts
+++ b/packages/frontend/core/src/mobile/pages/workspace/detail/journal-date-picker/constants.ts
@@ -6,6 +6,7 @@ export const MONTH_VIEW_HEIGHT =
   TOTAL_WEEKS * CELL_HEIGHT + (TOTAL_WEEKS - 1) * ROWS_GAP;
 export const WEEK_VIEW_HEIGHT = CELL_HEIGHT;
 
-export const HORIZONTAL_SWIPE_THRESHOLD = 4 * CELL_HEIGHT;
+export const HORIZONTAL_SWIPE_THRESHOLD = 2 * CELL_HEIGHT;
+export const SCROLL_DOWN_TO_FOLD_THRESHOLD = 30;
 
 export const DATE_FORMAT = 'YYYY-MM-DD';
diff --git a/packages/frontend/core/src/mobile/pages/workspace/detail/journal-date-picker/index.tsx b/packages/frontend/core/src/mobile/pages/workspace/detail/journal-date-picker/index.tsx
index 131339abc0..b8fe2a613a 100644
--- a/packages/frontend/core/src/mobile/pages/workspace/detail/journal-date-picker/index.tsx
+++ b/packages/frontend/core/src/mobile/pages/workspace/detail/journal-date-picker/index.tsx
@@ -1,9 +1,10 @@
-import { useCallback, useEffect, useState } from 'react';
+import { type HTMLAttributes, useCallback, useEffect, useState } from 'react';
 
 import { JournalDatePickerContext } from './context';
 import { ResizeViewport } from './viewport';
 
-export interface JournalDatePickerProps {
+export interface JournalDatePickerProps
+  extends Omit<HTMLAttributes<HTMLDivElement>, 'onChange'> {
   date: string;
   onChange: (date: string) => void;
   withDotDates: Set<string | null | undefined>;
@@ -12,6 +13,7 @@ export const JournalDatePicker = ({
   date: selected,
   onChange,
   withDotDates,
+  ...attrs
 }: JournalDatePickerProps) => {
   const [cursor, setCursor] = useState(selected);
 
@@ -39,7 +41,7 @@ export const JournalDatePicker = ({
         withDotDates,
       }}
     >
-      <ResizeViewport></ResizeViewport>
+      <ResizeViewport {...attrs} />
     </JournalDatePickerContext.Provider>
   );
 };
diff --git a/packages/frontend/core/src/mobile/pages/workspace/detail/journal-date-picker/viewport.tsx b/packages/frontend/core/src/mobile/pages/workspace/detail/journal-date-picker/viewport.tsx
index 7a0fb7f4ca..061292e198 100644
--- a/packages/frontend/core/src/mobile/pages/workspace/detail/journal-date-picker/viewport.tsx
+++ b/packages/frontend/core/src/mobile/pages/workspace/detail/journal-date-picker/viewport.tsx
@@ -1,11 +1,21 @@
+import { useGlobalEvent } from '@affine/core/mobile/hooks/use-global-events';
 import anime from 'animejs';
+import clsx from 'clsx';
 import dayjs from 'dayjs';
-import { useCallback, useContext, useEffect, useRef, useState } from 'react';
+import {
+  type HTMLAttributes,
+  useCallback,
+  useContext,
+  useEffect,
+  useRef,
+  useState,
+} from 'react';
 
 import {
   CELL_HEIGHT,
   DATE_FORMAT,
   MONTH_VIEW_HEIGHT,
+  SCROLL_DOWN_TO_FOLD_THRESHOLD,
   WEEK_VIEW_HEIGHT,
 } from './constants';
 import { JournalDatePickerContext } from './context';
@@ -14,7 +24,10 @@ import { SwipeHelper } from './swipe-helper';
 import * as styles from './viewport.css';
 import { WeekHeader, WeekRowSwipe } from './week';
 
-export const ResizeViewport = () => {
+export const ResizeViewport = ({
+  className,
+  ...attrs
+}: HTMLAttributes<HTMLDivElement>) => {
   const { selected } = useContext(JournalDatePickerContext);
   const draggableRef = useRef<HTMLDivElement>(null);
   const viewportRef = useRef<HTMLDivElement>(null);
@@ -97,8 +110,29 @@ export const ResizeViewport = () => {
     });
   }, [handleToggleModeWithAnimation, mode]);
 
+  // auto fold when scroll down
+  const prevScrollYRef = useRef(window.scrollY);
+  useGlobalEvent(
+    'scroll',
+    useCallback(() => {
+      if (mode === 'week') return;
+      if (isAnimating) return;
+      const offset = window.scrollY - prevScrollYRef.current;
+      if (offset >= SCROLL_DOWN_TO_FOLD_THRESHOLD) {
+        prevScrollYRef.current = window.scrollY;
+        handleToggleModeWithAnimation('week', 0);
+      }
+    }, [handleToggleModeWithAnimation, isAnimating, mode])
+  );
+  useGlobalEvent(
+    'scrollend',
+    useCallback(() => {
+      prevScrollYRef.current = window.scrollY;
+    }, [])
+  );
+
   return (
-    <div className={styles.root}>
+    <div className={clsx(styles.root, className)} {...attrs}>
       <WeekHeader className={styles.weekRow} />
       <div ref={viewportRef} style={{ height: draggedHeight }}>
         {mode === 'month' || isDragging || isAnimating ? (
diff --git a/packages/frontend/core/src/mobile/pages/workspace/detail/mobile-detail-page.css.ts b/packages/frontend/core/src/mobile/pages/workspace/detail/mobile-detail-page.css.ts
index 9cf9b651ac..5a5f60330a 100644
--- a/packages/frontend/core/src/mobile/pages/workspace/detail/mobile-detail-page.css.ts
+++ b/packages/frontend/core/src/mobile/pages/workspace/detail/mobile-detail-page.css.ts
@@ -93,3 +93,15 @@ export const journalIconButton = style({
   right: 12,
   display: 'flex',
 });
+
+export const journalDatePickerSticky = style({
+  background: cssVarV2('layer/background/primary'),
+  position: 'sticky',
+  zIndex: 1,
+  top: 56,
+  selectors: {
+    '&[data-standalone]': {
+      top: 'calc(44px + env(safe-area-inset-top, 12px))',
+    },
+  },
+});
diff --git a/packages/frontend/core/src/mobile/pages/workspace/detail/mobile-detail-page.tsx b/packages/frontend/core/src/mobile/pages/workspace/detail/mobile-detail-page.tsx
index 01ce08d1a6..a315218eab 100644
--- a/packages/frontend/core/src/mobile/pages/workspace/detail/mobile-detail-page.tsx
+++ b/packages/frontend/core/src/mobile/pages/workspace/detail/mobile-detail-page.tsx
@@ -262,6 +262,12 @@ const MobileDetailPage = ({
             date={date}
             onChange={handleDateChange}
             withDotDates={allJournalDates}
+            className={styles.journalDatePickerSticky}
+            data-standalone={
+              environment.isPwa || BUILD_CONFIG.isAndroid || BUILD_CONFIG.isIOS
+                ? ''
+                : undefined
+            }
           />
         ) : null}
         <DetailPageImpl />