diff --git a/frontend/src/App.tsx b/frontend/src/App.tsx
index dbcd382..f5e1757 100644
--- a/frontend/src/App.tsx
+++ b/frontend/src/App.tsx
@@ -103,6 +103,7 @@ function App() {
     const [browserPath, setBrowserPath] = useState(() => localStorage.getItem(STORAGE_KEY_BROWSER_PATH) || '')
     const [toast, setToast] = useState<{message: string, type: 'success' | 'error'} | null>(null)
     const [loading, setLoading] = useState(false)
+    const [isSelectingAll, setIsSelectingAll] = useState(false)
     const [updateInfo, setUpdateInfo] = useState<main.UpdateInfo | null>(null)
     const [showHistory, setShowHistory] = useState(false)
     const [showAnalysis, setShowAnalysis] = useState(false)
@@ -448,20 +449,39 @@ function App() {
 
     const handleDeselectAll = () => setSelectedPaths(new Set())
 
-    const handleSelectAll = useCallback(() => {
-        if (groups.length === 0) return
-        setSelectedPaths(prev => {
-            const next = new Set(prev)
-            groups.forEach(group => {
+    const handleSelectAll = useCallback(async () => {
+        if (groups.length === 0 || isSelectingAll) return
+        setIsSelectingAll(true)
+        try {
+            const next = new Set<string>()
+            const currentGroups = groups
+            const allGroups = [...currentGroups]
+            for (let page = 1; page <= pageInfo.totalPages; page++) {
+                if (page === pageInfo.page) continue
+                try {
+                    const pageData = await GetGroupsPage(page, pageInfo.pageSize, sortBy, searchQuery) as main.GroupPage
+                    allGroups.push(...(pageData.groups || []))
+                } catch (err) {
+                    console.error(`SelectAll page ${page} error:`, err)
+                }
+            }
+
+            allGroups.forEach(group => {
                 group.files.forEach(file => {
-                    if (!next.has(file.path)) {
-                        next.add(file.path)
-                    }
+                    next.add(file.path)
                 })
             })
-            return next
-        })
-    }, [groups])
+            setSelectedPaths(prev => {
+                const merged = new Set(prev)
+                next.forEach(path => merged.add(path))
+                return merged
+            })
+        } catch (err) {
+            console.error('SelectAll error:', err)
+        } finally {
+            setIsSelectingAll(false)
+        }
+    }, [groups, isSelectingAll, pageInfo.page, pageInfo.pageSize, pageInfo.totalPages, searchQuery, sortBy])
 
     const handleDismissUpdate = () => {
         if (updateInfo) {
@@ -521,7 +541,7 @@ function App() {
             // Ctrl+A - select all files
             if (e.ctrlKey && e.key === 'a') {
                 e.preventDefault()
-                handleSelectAll()
+                void handleSelectAll()
             }
 
             // Escape - deselect all
@@ -665,8 +685,14 @@ function App() {
                     onToggleGroup={handleToggleGroup}
                     onDeleteFile={handleDeleteFile}
                     onPageChange={(page) => setPageInfo(prev => ({...prev, page}))}
-                    onSortChange={setSortBy}
-                    onSearchChange={setSearchQuery}
+                    onSortChange={(value) => {
+                        setSortBy(value)
+                        setPageInfo(prev => ({...prev, page: 1}))
+                    }}
+                    onSearchChange={(value) => {
+                        setSearchQuery(value)
+                        setPageInfo(prev => ({...prev, page: 1}))
+                    }}
                 />
                 <ActionBar
                     selectedCount={selectedPaths.size}
@@ -674,6 +700,8 @@ function App() {
                     folders={folders}
                     groups={groups}
                     onSelectFolderDuplicates={handleSelectFolderDuplicates}
+                    onSelectAll={() => void handleSelectAll()}
+                    selectingAll={isSelectingAll}
                     onSmartSelect={handleSmartSelect}
                     onDelete={handleDelete}
                     onDeselectAll={handleDeselectAll}
diff --git a/frontend/src/components/ActionBar.tsx b/frontend/src/components/ActionBar.tsx
index db63f7e..ac640c2 100644
--- a/frontend/src/components/ActionBar.tsx
+++ b/frontend/src/components/ActionBar.tsx
@@ -1,6 +1,6 @@
 import {DuplicateGroup} from '../types'
 import {Button} from '@/components/ui/button'
-import {Trash2, X, FolderOpen, Sparkles} from 'lucide-react'
+import {Trash2, X, FolderOpen, Sparkles, CheckCheck} from 'lucide-react'
 import {useI18n} from '../i18n/context'
 
 interface ActionBarProps {
@@ -9,6 +9,8 @@ interface ActionBarProps {
     folders: string[]
     groups: DuplicateGroup[]
     onSelectFolderDuplicates: (folderPrefix: string) => void
+    onSelectAll: () => void
+    selectingAll: boolean
     onSmartSelect: () => void
     onDelete: () => void
     onDeselectAll: () => void
@@ -32,6 +34,8 @@ function ActionBar({
     folders,
     groups,
     onSelectFolderDuplicates,
+    onSelectAll,
+    selectingAll,
     onSmartSelect,
     onDelete,
     onDeselectAll
@@ -45,6 +49,12 @@ function ActionBar({
                 {t('actionBar.groupSummary', {count: groups.length, size: formatSize(totalWasted)})}
             </div>
             <div className="flex items-center gap-2 flex-wrap">
+                {groups.length > 0 && (
+                    <Button variant="outline" size="sm" className="h-7 text-xs" onClick={onSelectAll} disabled={selectingAll}>
+                        <CheckCheck className="h-3 w-3 mr-1"/>
+                        {selectingAll ? t('results.loading') : t('actionBar.selectAllResults')}
+                    </Button>
+                )}
                 {groups.length > 0 && (
                     <Button variant="outline" size="sm" className="h-7 text-xs" onClick={onSmartSelect}>
                         <Sparkles className="h-3 w-3 mr-1"/>
diff --git a/frontend/src/components/Results.tsx b/frontend/src/components/Results.tsx
index d0e620c..3f899ea 100644
--- a/frontend/src/components/Results.tsx
+++ b/frontend/src/components/Results.tsx
@@ -9,7 +9,7 @@ import {Badge} from '@/components/ui/badge'
 import {Checkbox} from '@/components/ui/checkbox'
 import {Dialog, DialogContent, DialogHeader, DialogTitle} from '@/components/ui/dialog'
 import {cn} from '@/lib/utils'
-import {FileVideo, Image, Music, FileText, Archive, File, Trash2, FolderOpen, ExternalLink, Eye} from 'lucide-react'
+import {FileVideo, Image, Music, FileText, Archive, File, Trash2, FolderOpen, ExternalLink, Eye, ChevronLeft, ChevronRight} from 'lucide-react'
 
 interface ResultsProps {
     groups: DuplicateGroup[]
@@ -125,6 +125,7 @@ function Results({
     const {t} = useI18n()
     const [activeFilter, setActiveFilter] = useState<FileType>('all')
     const [searchInput, setSearchInput] = useState(searchQuery)
+    const [pageInput, setPageInput] = useState(String(pageInfo.page))
     const [previewFile, setPreviewFile] = useState<main.FileInfo | null>(null)
     const [imagePreviewUrls, setImagePreviewUrls] = useState<Record<string, string>>({})
     const [brokenPreviewPaths, setBrokenPreviewPaths] = useState<Record<string, true>>({})
@@ -135,6 +136,23 @@ function Results({
         return () => clearTimeout(timer)
     }, [searchInput, onSearchChange])
 
+    useEffect(() => {
+        setSearchInput(searchQuery)
+    }, [searchQuery])
+
+    useEffect(() => {
+        setPageInput(String(pageInfo.page))
+    }, [pageInfo.page])
+
+    const applyPageInput = useCallback(() => {
+        const page = Number(pageInput)
+        if (Number.isFinite(page) && page >= 1 && page <= pageInfo.totalPages) {
+            onPageChange(page)
+            return
+        }
+        setPageInput(String(pageInfo.page))
+    }, [onPageChange, pageInfo.page, pageInfo.totalPages, pageInput])
+
     const ensureImagePreview = useCallback(async (filePath: string) => {
         if (imagePreviewUrls[filePath] || brokenPreviewPaths[filePath] || loadingImagePaths[filePath]) {
             return
@@ -478,6 +496,47 @@ function Results({
                     {previewFile && renderPreviewContent(previewFile)}
                 </DialogContent>
             </Dialog>
+
+            {pageInfo.totalPages > 1 && (
+                <div className="mt-4 flex items-center justify-end gap-2 text-xs text-muted-foreground">
+                    <Button
+                        variant="outline"
+                        size="sm"
+                        className="h-7 px-2"
+                        disabled={pageInfo.page <= 1}
+                        onClick={() => onPageChange(pageInfo.page - 1)}
+                    >
+                        <ChevronLeft className="h-3.5 w-3.5"/>
+                    </Button>
+                    <span>
+                        {t('results.pageStatus', {page: pageInfo.page, totalPages: pageInfo.totalPages, total: pageInfo.total})}
+                    </span>
+                    <input
+                        type="number"
+                        min={1}
+                        max={pageInfo.totalPages}
+                        aria-label={t('results.jumpToPage')}
+                        className="h-7 w-16 rounded-md border bg-background px-2 text-xs"
+                        value={pageInput}
+                        onChange={(e) => setPageInput(e.target.value)}
+                        onBlur={applyPageInput}
+                        onKeyDown={(e) => {
+                            if (e.key === 'Enter') {
+                                applyPageInput()
+                            }
+                        }}
+                    />
+                    <Button
+                        variant="outline"
+                        size="sm"
+                        className="h-7 px-2"
+                        disabled={pageInfo.page >= pageInfo.totalPages}
+                        onClick={() => onPageChange(pageInfo.page + 1)}
+                    >
+                        <ChevronRight className="h-3.5 w-3.5"/>
+                    </Button>
+                </div>
+            )}
         </div>
     )
 }
diff --git a/frontend/src/i18n/en-US.ts b/frontend/src/i18n/en-US.ts
index 4bf85e0..7c711f9 100644
--- a/frontend/src/i18n/en-US.ts
+++ b/frontend/src/i18n/en-US.ts
@@ -112,6 +112,7 @@ const enUS: typeof import('./zh-CN').default = {
 
     'actionBar.groupSummary': '{count} duplicate groups, reclaimable {size}',
     'actionBar.selectAll': 'Select All:',
+    'actionBar.selectAllResults': 'Select All Results',
     'actionBar.selected': '{count} files selected',
     'actionBar.deselectAll': 'Deselect All',
     'actionBar.deleteSelected': 'Delete Selected ({count})',
@@ -151,6 +152,8 @@ const enUS: typeof import('./zh-CN').default = {
     'results.openLocation': 'Open Location',
     'results.openFile': 'Open File',
     'results.deleteFile': 'Delete This File',
+    'results.jumpToPage': 'Jump to page',
+    'results.pageStatus': 'Page {page}/{totalPages} · {total} groups',
     'actionBar.smartSelect': 'Smart Select',
 
     'scan.groupingByFilename': 'Grouping results by filename...',
diff --git a/frontend/src/i18n/zh-CN.ts b/frontend/src/i18n/zh-CN.ts
index 28a6310..7946b3e 100644
--- a/frontend/src/i18n/zh-CN.ts
+++ b/frontend/src/i18n/zh-CN.ts
@@ -112,6 +112,7 @@ const zhCN = {
 
     'actionBar.groupSummary': '共 {count} 组重复，可释放 {size}',
     'actionBar.selectAll': '全选:',
+    'actionBar.selectAllResults': '全选查询结果',
     'actionBar.selected': '已选中 {count} 个文件',
     'actionBar.deselectAll': '取消全选',
     'actionBar.deleteSelected': '删除选中 ({count})',
@@ -151,6 +152,8 @@ const zhCN = {
     'results.openLocation': '打开所在目录',
     'results.openFile': '打开文件',
     'results.deleteFile': '删除此文件',
+    'results.jumpToPage': '跳转到页码',
+    'results.pageStatus': '第 {page}/{totalPages} 页 · 共 {total} 组',
     'actionBar.smartSelect': '智能选择',
 
     'scan.groupingByFilename': '正在按文件名整理结果...',
diff --git a/store.go b/store.go
index 1fb9b9c..5e134ee 100644
--- a/store.go
+++ b/store.go
@@ -268,7 +268,16 @@ func (s *Store) GetGroupsByScanID(scanID int64, page, pageSize int, sortBy, sear
 	}
 
 	var total int
-	s.db.QueryRow("SELECT COUNT(*) FROM groups WHERE scan_id = ?", scanID).Scan(&total)
+	if searchQuery != "" {
+		q := "%" + escapeLikePattern(searchQuery) + "%"
+		s.db.QueryRow(
+			`SELECT COUNT(*) FROM groups g
+				WHERE g.scan_id = ? AND EXISTS (SELECT 1 FROM files f WHERE f.group_id = g.id AND f.name LIKE ? ESCAPE '\')`,
+			scanID, q,
+		).Scan(&total)
+	} else {
+		s.db.QueryRow("SELECT COUNT(*) FROM groups WHERE scan_id = ?", scanID).Scan(&total)
+	}
 	totalPages := (total + pageSize - 1) / pageSize
 
 	orderBy := "g.file_count * g.size DESC"
@@ -286,10 +295,10 @@ func (s *Store) GetGroupsByScanID(scanID int64, page, pageSize int, sortBy, sear
 	var rows *sql.Rows
 	var err error
 	if searchQuery != "" {
-		q := "%" + searchQuery + "%"
+		q := "%" + escapeLikePattern(searchQuery) + "%"
 		rows, err = s.db.Query(
 			fmt.Sprintf(`SELECT g.id, g.hash, g.size, g.file_count FROM groups g
-				WHERE g.scan_id = ? AND EXISTS (SELECT 1 FROM files f WHERE f.group_id = g.id AND f.name LIKE ?)
+				WHERE g.scan_id = ? AND EXISTS (SELECT 1 FROM files f WHERE f.group_id = g.id AND f.name LIKE ? ESCAPE '\')
 				ORDER BY %s LIMIT ? OFFSET ?`, orderBy),
 			scanID, q, pageSize, offset,
 		)
@@ -335,6 +344,18 @@ func (s *Store) GetGroupsByScanID(scanID int64, page, pageSize int, sortBy, sear
 	}, nil
 }
 
+func escapeLikePattern(s string) string {
+	var b strings.Builder
+	b.Grow(len(s))
+	for _, r := range s {
+		if r == '\\' || r == '%' || r == '_' {
+			b.WriteByte('\\')
+		}
+		b.WriteRune(r)
+	}
+	return b.String()
+}
+
 // GetStatsByScanID returns stats for a specific scan
 func (s *Store) GetStatsByScanID(scanID int64) (ScanStats, error) {
 	var stats ScanStats