diff --git a/apps/property-survey/.expo/devices.json b/apps/property-survey/.expo/devices.json
index 02c3728..6fccd46 100644
--- a/apps/property-survey/.expo/devices.json
+++ b/apps/property-survey/.expo/devices.json
@@ -2,7 +2,7 @@
   "devices": [
     {
       "installationId": "626cc0bf-3d4a-47d1-9fd9-50b31e88db04",
-      "lastUsed": 1775747314027
+      "lastUsed": 1775749877472
     }
   ]
 }
diff --git a/apps/property-survey/android/app/src/main/AndroidManifest.xml b/apps/property-survey/android/app/src/main/AndroidManifest.xml
index 76e2eee..2ff16d9 100644
--- a/apps/property-survey/android/app/src/main/AndroidManifest.xml
+++ b/apps/property-survey/android/app/src/main/AndroidManifest.xml
@@ -1,6 +1,8 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools">
   <uses-permission android:name="android.permission.INTERNET"/>
+  <uses-permission android:name="android.permission.CAMERA"/>
   <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
+  <uses-permission android:name="android.permission.READ_MEDIA_IMAGES"/>
   <uses-permission android:name="android.permission.RECORD_AUDIO"/>
   <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW"/>
   <uses-permission android:name="android.permission.VIBRATE"/>
@@ -16,6 +18,15 @@
     <meta-data android:name="expo.modules.updates.ENABLED" android:value="false"/>
     <meta-data android:name="expo.modules.updates.EXPO_UPDATES_CHECK_ON_LAUNCH" android:value="ALWAYS"/>
     <meta-data android:name="expo.modules.updates.EXPO_UPDATES_LAUNCH_WAIT_MS" android:value="0"/>
+    <provider
+      android:name="androidx.core.content.FileProvider"
+      android:authorities="${applicationId}.provider"
+      android:exported="false"
+      android:grantUriPermissions="true">
+      <meta-data
+        android:name="android.support.FILE_PROVIDER_PATHS"
+        android:resource="@xml/file_paths"/>
+    </provider>
     <activity android:name=".MainActivity" android:configChanges="keyboard|keyboardHidden|orientation|screenSize|screenLayout|uiMode" android:launchMode="singleTask" android:windowSoftInputMode="adjustResize" android:theme="@style/Theme.App.SplashScreen" android:exported="true" android:screenOrientation="unspecified">
       <intent-filter>
         <action android:name="android.intent.action.MAIN"/>
diff --git a/apps/property-survey/android/app/src/main/res/xml/file_paths.xml b/apps/property-survey/android/app/src/main/res/xml/file_paths.xml
new file mode 100644
index 0000000..963f285
--- /dev/null
+++ b/apps/property-survey/android/app/src/main/res/xml/file_paths.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<paths>
+  <external-path name="external-files" path="." />
+  <external-files-path name="external-app-files" path="." />
+  <cache-path name="cache" path="." />
+  <external-cache-path name="external-cache" path="." />
+  <files-path name="internal-files" path="." />
+</paths>
diff --git a/apps/property-survey/app.json b/apps/property-survey/app.json
index 48f5725..09cc48d 100644
--- a/apps/property-survey/app.json
+++ b/apps/property-survey/app.json
@@ -25,6 +25,14 @@
       "package": "com.example.propertysurvey"
     },
     "plugins": [
+      [
+        "expo-image-picker",
+        {
+          "cameraPermission": "允许访问相机以拍摄照片",
+          "microphonePermission": false,
+          "photosPermission": "允许访问相册以选择照片"
+        }
+      ],
       [
         "expo-media-library",
         {
diff --git a/apps/property-survey/src/db/database.ts b/apps/property-survey/src/db/database.ts
index f73e807..398eb22 100644
--- a/apps/property-survey/src/db/database.ts
+++ b/apps/property-survey/src/db/database.ts
@@ -73,4 +73,8 @@ export async function initDatabase(): Promise<void> {
   if (!itemCols.some((c) => c.name === 'unit')) {
     await database.execAsync(`ALTER TABLE items ADD COLUMN unit TEXT NOT NULL DEFAULT ''`)
   }
+  // 迁移：为旧数据库添加 confirmed_at 列
+  if (!itemCols.some((c) => c.name === 'confirmed_at')) {
+    await database.execAsync(`ALTER TABLE items ADD COLUMN confirmed_at TEXT DEFAULT NULL`)
+  }
 }
diff --git a/apps/property-survey/src/db/items.ts b/apps/property-survey/src/db/items.ts
index 3020c15..f25447a 100644
--- a/apps/property-survey/src/db/items.ts
+++ b/apps/property-survey/src/db/items.ts
@@ -4,8 +4,8 @@ import { getDatabase } from './database'
 export async function insertItem(params: InsertItemParams): Promise<Item> {
   const db = getDatabase()
   const result = await db.runAsync(
-    `INSERT INTO items (marker_id, name, category, quantity, unit, spec, estimated_value, reference_price, remark)
-     VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)`,
+    `INSERT INTO items (marker_id, name, category, quantity, unit, spec, estimated_value, reference_price, remark, confirmed_at)
+     VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`,
     [
       params.markerId,
       params.name,
@@ -16,12 +16,13 @@ export async function insertItem(params: InsertItemParams): Promise<Item> {
       params.estimatedValue,
       params.referencePrice,
       params.remark,
+      params.confirmedAt ?? null,
     ],
   )
   const row = await db.getFirstAsync<Item>(
     `SELECT id, marker_id as markerId, name, category, quantity, unit, spec,
             estimated_value as estimatedValue, reference_price as referencePrice, remark,
-            created_at as createdAt, updated_at as updatedAt
+            confirmed_at as confirmedAt, created_at as createdAt, updated_at as updatedAt
      FROM items WHERE id = ?`,
     [result.lastInsertRowId],
   )
@@ -40,7 +41,7 @@ export async function getItemsByMarker(
   return db.getAllAsync<ItemWithPhotoCount>(
     `SELECT i.id, i.marker_id as markerId, i.name, i.category, i.quantity, i.unit, i.spec,
             i.estimated_value as estimatedValue, i.reference_price as referencePrice, i.remark,
-            i.created_at as createdAt, i.updated_at as updatedAt,
+            i.confirmed_at as confirmedAt, i.created_at as createdAt, i.updated_at as updatedAt,
             COUNT(p.id) as photoCount
      FROM items i
      LEFT JOIN photos p ON p.item_id = i.id
@@ -67,6 +68,7 @@ export async function updateItem(
   if (params.estimatedValue !== undefined) { fields.push('estimated_value = ?'); values.push(params.estimatedValue) }
   if (params.referencePrice !== undefined) { fields.push('reference_price = ?'); values.push(params.referencePrice) }
   if (params.remark !== undefined) { fields.push('remark = ?'); values.push(params.remark) }
+  if (params.confirmedAt !== undefined) { fields.push('confirmed_at = ?'); values.push(params.confirmedAt ?? null) }
 
   if (fields.length === 0) return
   fields.push("updated_at = datetime('now')")
@@ -88,6 +90,7 @@ export async function copyItemsToMarker(fromMarkerId: number, toMarkerId: number
       `INSERT INTO items (marker_id, name, category, quantity, unit, spec, estimated_value, reference_price, remark)
        VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)`,
       [toMarkerId, item.name, item.category, item.quantity, item.unit, item.spec, item.estimated_value, item.reference_price, item.remark],
+      // 复制时不继承确认状态，新标记点重新确认
     )
   }
 }
diff --git a/apps/property-survey/src/db/schema.ts b/apps/property-survey/src/db/schema.ts
index bcac244..1735ea9 100644
--- a/apps/property-survey/src/db/schema.ts
+++ b/apps/property-survey/src/db/schema.ts
@@ -22,6 +22,7 @@ export const CREATE_ITEMS_TABLE = `
     estimated_value  REAL    NOT NULL DEFAULT 0,
     reference_price  REAL    NOT NULL DEFAULT 0,
     remark           TEXT    NOT NULL DEFAULT '',
+    confirmed_at     TEXT    DEFAULT NULL,
     created_at       TEXT    NOT NULL DEFAULT (datetime('now')),
     updated_at       TEXT    NOT NULL DEFAULT (datetime('now'))
   )
diff --git a/apps/property-survey/src/features/item/ItemFields.tsx b/apps/property-survey/src/features/item/ItemFields.tsx
index 8b86f05..bcb5883 100644
--- a/apps/property-survey/src/features/item/ItemFields.tsx
+++ b/apps/property-survey/src/features/item/ItemFields.tsx
@@ -19,10 +19,27 @@ interface ItemFieldsProps {
   hook: FormHook
 }
 
+function formatConfirmedAt(iso: string): string {
+  const d = new Date(iso)
+  const mm = String(d.getMonth() + 1).padStart(2, '0')
+  const dd = String(d.getDate()).padStart(2, '0')
+  const hh = String(d.getHours()).padStart(2, '0')
+  const min = String(d.getMinutes()).padStart(2, '0')
+  return `${mm}-${dd} ${hh}:${min}`
+}
+
 export function ItemFields({ hook }: ItemFieldsProps) {
   const { form, setField, nameError, photoItemId, save } = hook
   const { categories } = useCategories()
 
+  function toggleConfirm() {
+    if (form.confirmedAt) {
+      setField('confirmedAt', null)
+    } else {
+      setField('confirmedAt', new Date().toISOString())
+    }
+  }
+
   return (
     <View style={styles.root}>
       {/* 左列：表单字段 */}
@@ -150,6 +167,16 @@ export function ItemFields({ hook }: ItemFieldsProps) {
 
         {/* 冻结在底部的保存按钮 */}
         <View style={styles.saveBar}>
+          <TouchableOpacity style={styles.confirmRow} onPress={toggleConfirm} activeOpacity={0.7}>
+            <Ionicons
+              name={form.confirmedAt ? 'checkbox' : 'square-outline'}
+              size={22}
+              color={form.confirmedAt ? '#10B981' : '#9CA3AF'}
+            />
+            <Text style={[styles.confirmLabel, form.confirmedAt ? styles.confirmLabelDone : null]}>
+              {form.confirmedAt ? formatConfirmedAt(form.confirmedAt) : '待确认'}
+            </Text>
+          </TouchableOpacity>
           <TouchableOpacity style={styles.saveBtn} onPress={save} activeOpacity={0.8}>
             <Text style={styles.saveBtnText}>保存</Text>
           </TouchableOpacity>
@@ -221,7 +248,7 @@ const styles = StyleSheet.create({
   },
   fieldLabel: { fontSize: 14, color: '#374151', flex: 1 },
   fieldInput: { flex: 1, fontSize: 14, color: '#111827', paddingVertical: 10 },
-  divider: { height: StyleSheet.hairlineWidth, backgroundColor: '#E5E7EB', marginLeft: 14 },
+  divider: { height: 1, backgroundColor: '#D1D5DB', marginLeft: 14 },
 
   remarkInput: {
     paddingHorizontal: 14,
@@ -237,11 +264,21 @@ const styles = StyleSheet.create({
 
   saveBar: {
     paddingHorizontal: 14,
-    paddingVertical: 10,
-    borderTopWidth: StyleSheet.hairlineWidth,
-    borderTopColor: '#E5E7EB',
+    paddingTop: 10,
+    paddingBottom: 10,
+    gap: 8,
+    borderTopWidth: 1,
+    borderTopColor: '#D1D5DB',
     backgroundColor: '#fff',
   },
+  confirmRow: {
+    flexDirection: 'row',
+    alignItems: 'center',
+    gap: 6,
+    paddingVertical: 4,
+  },
+  confirmLabel: { fontSize: 13, color: '#9CA3AF' },
+  confirmLabelDone: { color: '#10B981', fontWeight: '600' },
   saveBtn: {
     backgroundColor: '#10B981',
     borderRadius: 8,
@@ -251,7 +288,7 @@ const styles = StyleSheet.create({
   saveBtnText: { color: '#fff', fontSize: 14, fontWeight: '700' },
 
   // 分隔线
-  colDivider: { width: StyleSheet.hairlineWidth, backgroundColor: '#E5E7EB' },
+  colDivider: { width: 1, backgroundColor: '#D1D5DB' },
 
   // 右列：照片
   photoCol: {
diff --git a/apps/property-survey/src/features/item/ItemFormSheet.tsx b/apps/property-survey/src/features/item/ItemFormSheet.tsx
index a56b8e0..47abeff 100644
--- a/apps/property-survey/src/features/item/ItemFormSheet.tsx
+++ b/apps/property-survey/src/features/item/ItemFormSheet.tsx
@@ -157,7 +157,7 @@ const styles = StyleSheet.create({
     flex: 1,
     backgroundColor: '#fff',
     borderLeftWidth: StyleSheet.hairlineWidth,
-    borderLeftColor: '#E5E7EB',
+    borderLeftColor: '#D1D5DB',
   },
   header: {
     flexDirection: 'row',
@@ -165,8 +165,8 @@ const styles = StyleSheet.create({
     justifyContent: 'space-between',
     paddingHorizontal: 16,
     paddingVertical: 12,
-    borderBottomWidth: StyleSheet.hairlineWidth,
-    borderBottomColor: '#E5E7EB',
+    borderBottomWidth: 1,
+    borderBottomColor: '#D1D5DB',
   },
   headerActions: { flexDirection: 'row', alignItems: 'center', gap: 16 },
   headerTitle: { fontSize: 16, fontWeight: '700', color: '#111827' },
@@ -177,8 +177,8 @@ const styles = StyleSheet.create({
     gap: 10,
     paddingHorizontal: 16,
     paddingVertical: 10,
-    borderBottomWidth: StyleSheet.hairlineWidth,
-    borderBottomColor: '#E5E7EB',
+    borderBottomWidth: 1,
+    borderBottomColor: '#D1D5DB',
   },
   colorDot: { width: 24, height: 24, borderRadius: 12 },
   colorDotSelected: { borderWidth: 3, borderColor: '#111827' },
diff --git a/apps/property-survey/src/features/item/useItemForm.ts b/apps/property-survey/src/features/item/useItemForm.ts
index 85a5343..69e2294 100644
--- a/apps/property-survey/src/features/item/useItemForm.ts
+++ b/apps/property-survey/src/features/item/useItemForm.ts
@@ -11,6 +11,7 @@ interface FormState {
   estimatedValue: string
   referencePrice: string
   remark: string
+  confirmedAt: string | null
 }
 
 const DEFAULT_FORM: FormState = {
@@ -22,6 +23,7 @@ const DEFAULT_FORM: FormState = {
   estimatedValue: '',
   referencePrice: '',
   remark: '',
+  confirmedAt: null,
 }
 
 export function useItemForm(markerId: number, onSaved: () => void) {
@@ -50,6 +52,7 @@ export function useItemForm(markerId: number, onSaved: () => void) {
       estimatedValue: item.estimatedValue ? String(item.estimatedValue) : '',
       referencePrice: item.referencePrice ? String(item.referencePrice) : '',
       remark: item.remark,
+      confirmedAt: item.confirmedAt,
     })
     setIsDirty(false)
   }
@@ -76,6 +79,7 @@ export function useItemForm(markerId: number, onSaved: () => void) {
       estimatedValue: parseFloat(form.estimatedValue) || 0,
       referencePrice: parseFloat(form.referencePrice) || 0,
       remark: form.remark.trim(),
+      confirmedAt: form.confirmedAt,
     }
 
     try {
@@ -109,6 +113,7 @@ export function useItemForm(markerId: number, onSaved: () => void) {
       estimatedValue: parseFloat(form.estimatedValue) || 0,
       referencePrice: parseFloat(form.referencePrice) || 0,
       remark: form.remark.trim(),
+      confirmedAt: form.confirmedAt,
     }
     try {
       if (editingId !== null) {
diff --git a/apps/property-survey/src/features/map/MarkerList.tsx b/apps/property-survey/src/features/map/MarkerList.tsx
index 14d8e66..9ba6c18 100644
--- a/apps/property-survey/src/features/map/MarkerList.tsx
+++ b/apps/property-survey/src/features/map/MarkerList.tsx
@@ -1,5 +1,6 @@
 import { useCallback, useEffect, useState } from 'react'
 import { ScrollView, StyleSheet, Text, TouchableOpacity, View } from 'react-native'
+import { Ionicons } from '@expo/vector-icons'
 import type { FloorNumber, Marker } from '@repo/types'
 import { getMarkersByFloor, updateMarker } from '../../db/markers'
 import { getItemsByMarker } from '../../db/items'
@@ -8,7 +9,7 @@ import { FloorMap } from './FloorMap'
 interface MarkerWithItems extends Marker {
   itemCount: number
   itemNames: string[]
-  itemSummaries: { name: string; quantity: number }[]
+  itemSummaries: { name: string; quantity: number; confirmedAt: string | null }[]
 }
 
 interface MarkerListProps {
@@ -36,7 +37,7 @@ export function MarkerList({ floor, onMarkerPress, selectedMarkerId, refreshKey
           ...m,
           itemCount: markerItems.length,
           itemNames: markerItems.map((i) => i.name),
-          itemSummaries: markerItems.map((i) => ({ name: i.name, quantity: i.quantity })),
+          itemSummaries: markerItems.map((i) => ({ name: i.name, quantity: i.quantity, confirmedAt: i.confirmedAt })),
         }
       })
       setMarkers(withItems)
@@ -108,6 +109,12 @@ export function MarkerList({ floor, onMarkerPress, selectedMarkerId, refreshKey
                   </Text>
                   {(m.itemSummaries?.length ?? 0) > 0 && m.itemSummaries.map((s, i) => (
                     <View key={i} style={styles.itemSummaryRow}>
+                      <Ionicons
+                        name={s.confirmedAt ? 'checkbox' : 'square-outline'}
+                        size={11}
+                        color={s.confirmedAt ? '#10B981' : '#9CA3AF'}
+                        style={styles.itemCheckbox}
+                      />
                       <Text style={styles.itemNames} numberOfLines={1}>{s.name}</Text>
                       <Text style={styles.itemQty}>×{s.quantity}</Text>
                     </View>
@@ -210,7 +217,8 @@ const styles = StyleSheet.create({
   itemContent: { flex: 1 },
   itemLabel: { fontSize: 12, fontWeight: '600', color: '#374151' },
   itemLabelSelected: { color: '#065F46' },
-  itemSummaryRow: { flexDirection: 'row', justifyContent: 'space-between', marginTop: 2 },
+  itemSummaryRow: { flexDirection: 'row', alignItems: 'center', marginTop: 2, gap: 2 },
+  itemCheckbox: { flexShrink: 0 },
   itemNames: { fontSize: 11, color: '#6B7280', flex: 1, lineHeight: 15 },
   itemQty: { fontSize: 11, color: '#9CA3AF', lineHeight: 15, marginLeft: 4 },
   countBadge: {
diff --git a/apps/property-survey/src/features/photo/MarkerPhotoPanel.tsx b/apps/property-survey/src/features/photo/MarkerPhotoPanel.tsx
index fe380f9..094f22f 100644
--- a/apps/property-survey/src/features/photo/MarkerPhotoPanel.tsx
+++ b/apps/property-survey/src/features/photo/MarkerPhotoPanel.tsx
@@ -1,6 +1,5 @@
-import { useCallback, useEffect, useState } from 'react'
+import { useCallback, useEffect, useRef, useState } from 'react'
 import {
-  Dimensions,
   Image,
   Modal,
   ScrollView,
@@ -31,12 +30,11 @@ interface MarkerPhotoPanelProps {
   onClose: () => void
 }
 
-const SCREEN_W = Dimensions.get('window').width
-
 export function MarkerPhotoPanel({ marker, onClose }: MarkerPhotoPanelProps) {
   const [groups, setGroups] = useState<PhotoGroup[]>([])
   const [allPhotos, setAllPhotos] = useState<PhotoEntry[]>([])
   const [previewIndex, setPreviewIndex] = useState<number | null>(null)
+  const touchStartX = useRef(0)
 
   const load = useCallback(async () => {
     if (!marker) { setGroups([]); setAllPhotos([]); return }
@@ -61,6 +59,14 @@ export function MarkerPhotoPanel({ marker, onClose }: MarkerPhotoPanelProps) {
   if (!marker) return null
 
   const totalPhotos = allPhotos.length
+  const current = previewIndex !== null ? allPhotos[previewIndex] : null
+
+  function goPrev() {
+    setPreviewIndex((i) => (i !== null && i > 0 ? i - 1 : i))
+  }
+  function goNext() {
+    setPreviewIndex((i) => (i !== null && i < totalPhotos - 1 ? i + 1 : i))
+  }
 
   return (
     <View style={styles.panel}>
@@ -122,47 +128,55 @@ export function MarkerPhotoPanel({ marker, onClose }: MarkerPhotoPanelProps) {
       {/* 全屏预览 */}
       <Modal
         visible={previewIndex !== null}
-        transparent
         animationType="fade"
         statusBarTranslucent
         onRequestClose={() => setPreviewIndex(null)}
       >
-        <View style={styles.overlay}>
+        <View
+          style={styles.overlay}
+          onTouchStart={(e) => { touchStartX.current = e.nativeEvent.pageX }}
+          onTouchEnd={(e) => {
+            const dx = e.nativeEvent.pageX - touchStartX.current
+            if (dx < -50) goNext()
+            else if (dx > 50) goPrev()
+          }}
+        >
+          {/* 顶部信息栏 */}
           <View style={styles.previewTopBar}>
             <Text style={styles.previewItemName} numberOfLines={1}>
-              {previewIndex !== null ? allPhotos[previewIndex]?.itemName : ''}
+              {current?.itemName ?? ''}
             </Text>
             <Text style={styles.previewCounter}>
               {(previewIndex ?? 0) + 1} / {totalPhotos}
             </Text>
-            <TouchableOpacity onPress={() => setPreviewIndex(null)} hitSlop={{ top: 8, bottom: 8, left: 8, right: 8 }}>
+            <TouchableOpacity
+              onPress={() => setPreviewIndex(null)}
+              hitSlop={{ top: 8, bottom: 8, left: 8, right: 8 }}
+            >
               <Ionicons name="close" size={26} color="#fff" />
             </TouchableOpacity>
           </View>
 
-          <View style={styles.previewImageArea}>
-            {previewIndex !== null && allPhotos[previewIndex] && (
+          {/* 单张照片 */}
+          <View style={styles.photoArea}>
+            {current && (
               <Image
-                source={{ uri: allPhotos[previewIndex].photo.filePath }}
-                style={styles.previewImg}
+                source={{ uri: current.photo.filePath }}
+                style={StyleSheet.absoluteFill}
                 resizeMode="contain"
               />
             )}
           </View>
 
+          {/* 左箭头 */}
           {previewIndex !== null && previewIndex > 0 && (
-            <TouchableOpacity
-              style={styles.arrowLeft}
-              onPress={() => setPreviewIndex((i) => Math.max(0, (i ?? 1) - 1))}
-            >
+            <TouchableOpacity style={styles.arrowLeft} onPress={goPrev}>
               <Ionicons name="chevron-back" size={34} color="#fff" />
             </TouchableOpacity>
           )}
+          {/* 右箭头 */}
           {previewIndex !== null && previewIndex < totalPhotos - 1 && (
-            <TouchableOpacity
-              style={styles.arrowRight}
-              onPress={() => setPreviewIndex((i) => Math.min(totalPhotos - 1, (i ?? 0) + 1))}
-            >
+            <TouchableOpacity style={styles.arrowRight} onPress={goNext}>
               <Ionicons name="chevron-forward" size={34} color="#fff" />
             </TouchableOpacity>
           )}
@@ -220,22 +234,25 @@ const styles = StyleSheet.create({
   empty: { alignItems: 'center', paddingTop: 60, gap: 12 },
   emptyText: { fontSize: 14, color: '#9CA3AF' },
 
-  overlay: { flex: 1, backgroundColor: 'rgba(0,0,0,0.94)', justifyContent: 'center' },
+  overlay: {
+    flex: 1,
+    backgroundColor: '#000',
+  },
   previewTopBar: {
-    position: 'absolute',
-    top: 0, left: 0, right: 0,
     flexDirection: 'row',
     alignItems: 'center',
     justifyContent: 'space-between',
     paddingHorizontal: 16,
     paddingTop: 52,
     paddingBottom: 12,
-    zIndex: 10,
   },
   previewItemName: { flex: 1, color: '#fff', fontSize: 15, fontWeight: '600' },
   previewCounter: { color: 'rgba(255,255,255,0.6)', fontSize: 13, marginHorizontal: 12 },
-  previewImageArea: { flex: 1, justifyContent: 'center', alignItems: 'center' },
-  previewImg: { width: SCREEN_W, height: SCREEN_W * 1.2 },
-  arrowLeft: { position: 'absolute', left: 8, top: '50%', padding: 8, zIndex: 10 },
-  arrowRight: { position: 'absolute', right: 8, top: '50%', padding: 8, zIndex: 10 },
+
+  photoArea: {
+    flex: 1,
+  },
+
+  arrowLeft: { position: 'absolute', left: 8, top: '50%', padding: 12 },
+  arrowRight: { position: 'absolute', right: 8, top: '50%', padding: 12 },
 })
diff --git a/apps/property-survey/src/features/photo/PhotoGrid.tsx b/apps/property-survey/src/features/photo/PhotoGrid.tsx
index 55acf5a..2a7bfd5 100644
--- a/apps/property-survey/src/features/photo/PhotoGrid.tsx
+++ b/apps/property-survey/src/features/photo/PhotoGrid.tsx
@@ -1,12 +1,14 @@
-import { useCallback, useEffect, useState } from 'react'
+import { useCallback, useEffect, useRef, useState } from 'react'
 import {
   Alert,
+  FlatList,
   Image,
   Modal,
   ScrollView,
   StyleSheet,
   Text,
   TouchableOpacity,
+  useWindowDimensions,
   View,
 } from 'react-native'
 import { Ionicons } from '@expo/vector-icons'
@@ -23,6 +25,8 @@ export function PhotoGrid({ itemId }: PhotoGridProps) {
   const [photos, setPhotos] = useState<Photo[]>([])
   const [previewIndex, setPreviewIndex] = useState<number | null>(null)
   const [saving, setSaving] = useState(false)
+  const { width: screenWidth } = useWindowDimensions()
+  const flatListRef = useRef<FlatList<Photo>>(null)
 
   const load = useCallback(async () => {
     try {
@@ -117,22 +121,33 @@ export function PhotoGrid({ itemId }: PhotoGridProps) {
             <Ionicons name="download-outline" size={22} color="#fff" />
           </TouchableOpacity>
 
-          <ScrollView
+          <FlatList
+            ref={flatListRef}
+            data={photos}
             horizontal
             pagingEnabled
             showsHorizontalScrollIndicator={false}
-            contentOffset={{ x: (previewIndex ?? 0) * 400, y: 0 }}
-          >
-            {photos.map((photo) => (
-              <View key={photo.id} style={styles.previewPage}>
+            keyExtractor={(p) => String(p.id)}
+            initialScrollIndex={previewIndex ?? 0}
+            getItemLayout={(_, index) => ({
+              length: screenWidth,
+              offset: screenWidth * index,
+              index,
+            })}
+            onMomentumScrollEnd={(e) => {
+              const idx = Math.round(e.nativeEvent.contentOffset.x / screenWidth)
+              setPreviewIndex(idx)
+            }}
+            renderItem={({ item: photo }) => (
+              <View style={[styles.previewPage, { width: screenWidth }]}>
                 <Image
                   source={{ uri: photo.filePath }}
-                  style={styles.previewImg}
+                  style={[styles.previewImg, { width: screenWidth }]}
                   resizeMode="contain"
                 />
               </View>
-            ))}
-          </ScrollView>
+            )}
+          />
           <Text style={styles.counter}>
             {(previewIndex ?? 0) + 1} / {photos.length}
           </Text>
@@ -175,12 +190,10 @@ const styles = StyleSheet.create({
   },
   saveBtnDisabled: { opacity: 0.4 },
   previewPage: {
-    width: 400,
     justifyContent: 'center',
     alignItems: 'center',
   },
   previewImg: {
-    width: 400,
     height: 500,
   },
   counter: {
diff --git a/apps/property-survey/src/features/photo/PhotoPicker.tsx b/apps/property-survey/src/features/photo/PhotoPicker.tsx
index 3b9521b..a6abe73 100644
--- a/apps/property-survey/src/features/photo/PhotoPicker.tsx
+++ b/apps/property-survey/src/features/photo/PhotoPicker.tsx
@@ -12,8 +12,8 @@ export function PhotoPicker({ itemId, onAdded }: PhotoPickerProps) {
 
   function showPicker() {
     Alert.alert('添加照片', '请选择来源', [
-      { text: '拍照', onPress: () => capture('camera') },
-      { text: '从相册选择', onPress: () => capture('library') },
+      { text: '拍照', onPress: () => setTimeout(() => capture('camera'), 300) },
+      { text: '从相册选择', onPress: () => setTimeout(() => capture('library'), 300) },
       { text: '取消', style: 'cancel' },
     ])
   }
diff --git a/packages/types/src/survey.ts b/packages/types/src/survey.ts
index ad3aa93..cd97947 100644
--- a/packages/types/src/survey.ts
+++ b/packages/types/src/survey.ts
@@ -31,6 +31,7 @@ export interface Item {
   estimatedValue: number
   referencePrice: number
   remark: string
+  confirmedAt: string | null
   createdAt: string
   updatedAt: string
 }