diff --git a/webui/src/features/settings/BackupSection.jsx b/webui/src/features/settings/BackupSection.jsx
index c31a56f..06a1268 100644
--- a/webui/src/features/settings/BackupSection.jsx
+++ b/webui/src/features/settings/BackupSection.jsx
@@ -6,7 +6,9 @@ export default function BackupSection({
     setImportMode,
     importing,
     onLoadExportData,
+    onDownloadExportFile,
     onImport,
+    onImportFileChange,
     importText,
     setImportText,
     exportData,
@@ -23,6 +25,27 @@ export default function BackupSection({
                     <Download className="w-4 h-4" />
                     {t('settings.loadExport')}
                 </button>
+                <button
+                    type="button"
+                    onClick={onDownloadExportFile}
+                    className="px-3 py-2 rounded-lg bg-secondary border border-border hover:bg-secondary/80 text-sm flex items-center gap-2"
+                >
+                    <Download className="w-4 h-4" />
+                    {t('settings.downloadExport')}
+                </button>
+                <label className="px-3 py-2 rounded-lg bg-secondary border border-border hover:bg-secondary/80 text-sm flex items-center gap-2 cursor-pointer">
+                    <Upload className="w-4 h-4" />
+                    {t('settings.chooseImportFile')}
+                    <input
+                        type="file"
+                        accept=".json,application/json"
+                        className="hidden"
+                        onChange={(e) => {
+                            onImportFileChange(e.target.files?.[0] || null)
+                            e.target.value = ''
+                        }}
+                    />
+                </label>
                 <select
                     value={importMode}
                     onChange={(e) => setImportMode(e.target.value)}
diff --git a/webui/src/features/settings/SettingsContainer.jsx b/webui/src/features/settings/SettingsContainer.jsx
index 86ea4a5..fc51907 100644
--- a/webui/src/features/settings/SettingsContainer.jsx
+++ b/webui/src/features/settings/SettingsContainer.jsx
@@ -36,6 +36,8 @@ export default function SettingsContainer({ onRefresh, onMessage, authFetch, onF
         saveSettings,
         updatePassword,
         loadExportData,
+        downloadExportFile,
+        loadImportFile,
         doImport,
     } = useSettingsForm({
         apiFetch,
@@ -102,7 +104,9 @@ export default function SettingsContainer({ onRefresh, onMessage, authFetch, onF
                 setImportMode={setImportMode}
                 importing={importing}
                 onLoadExportData={loadExportData}
+                onDownloadExportFile={downloadExportFile}
                 onImport={doImport}
+                onImportFileChange={loadImportFile}
                 importText={importText}
                 setImportText={setImportText}
                 exportData={exportData}
diff --git a/webui/src/features/settings/useSettingsForm.js b/webui/src/features/settings/useSettingsForm.js
index e24a885..3cd785b 100644
--- a/webui/src/features/settings/useSettingsForm.js
+++ b/webui/src/features/settings/useSettingsForm.js
@@ -222,15 +222,60 @@ export function useSettingsForm({ apiFetch, t, onMessage, onRefresh, onForceLogo
             const { res, data } = await getExportData(apiFetch)
             if (!res.ok) {
                 onMessage('error', data.detail || t('settings.exportFailed'))
-                return
+                return null
             }
             setExportData(data)
             onMessage('success', t('settings.exportLoaded'))
+            return data
         } catch (_e) {
             onMessage('error', t('settings.exportFailed'))
+            return null
         }
     }, [apiFetch, onMessage, t])
 
+    const downloadExportFile = useCallback(async () => {
+        let latest = exportData
+        if (!latest?.json) {
+            const loaded = await loadExportData()
+            if (!loaded) {
+                return
+            }
+            latest = loaded
+        }
+        const jsonText = String(latest?.json || '').trim()
+        if (!jsonText) {
+            onMessage('error', t('settings.exportFailed'))
+            return
+        }
+        const blob = new Blob([jsonText], { type: 'application/json;charset=utf-8' })
+        const url = URL.createObjectURL(blob)
+        const now = new Date()
+        const pad = (n) => String(n).padStart(2, '0')
+        const filename = `ds2api-config-backup-${now.getFullYear()}${pad(now.getMonth() + 1)}${pad(now.getDate())}-${pad(now.getHours())}${pad(now.getMinutes())}${pad(now.getSeconds())}.json`
+        const link = document.createElement('a')
+        link.href = url
+        link.download = filename
+        document.body.appendChild(link)
+        link.click()
+        document.body.removeChild(link)
+        URL.revokeObjectURL(url)
+        onMessage('success', t('settings.exportDownloaded'))
+    }, [exportData, loadExportData, onMessage, t])
+
+    const loadImportFile = useCallback((file) => {
+        if (!file) return
+        const reader = new FileReader()
+        reader.onload = () => {
+            const text = String(reader.result || '')
+            setImportText(text)
+            onMessage('success', t('settings.importFileLoaded'))
+        }
+        reader.onerror = () => {
+            onMessage('error', t('settings.importFileReadFailed'))
+        }
+        reader.readAsText(file, 'utf-8')
+    }, [onMessage, t])
+
     const doImport = useCallback(async () => {
         if (!String(importText || '').trim()) {
             onMessage('error', t('settings.importEmpty'))
@@ -290,6 +335,8 @@ export function useSettingsForm({ apiFetch, t, onMessage, onRefresh, onForceLogo
         saveSettings,
         updatePassword,
         loadExportData,
+        downloadExportFile,
+        loadImportFile,
         doImport,
     }
 }
diff --git a/webui/src/locales/en.json b/webui/src/locales/en.json
index cfa68ca..5db6546 100644
--- a/webui/src/locales/en.json
+++ b/webui/src/locales/en.json
@@ -240,8 +240,10 @@
         "autoDeleteWarning": "Warning: Enabling this will delete all session history after each request. Use with caution.",
         "backupTitle": "Backup & Restore",
         "loadExport": "Load current export",
+        "downloadExport": "Download backup file",
         "importModeMerge": "Merge import (default)",
         "importModeReplace": "Replace all import",
+        "chooseImportFile": "Choose import file",
         "importNow": "Import now",
         "importing": "Importing...",
         "importPlaceholder": "Paste config JSON to import",
@@ -249,8 +251,11 @@
         "importInvalidJson": "Import JSON is invalid.",
         "importFailed": "Import failed.",
         "importSuccess": "Config imported (mode: {mode}).",
+        "importFileLoaded": "Import file content loaded.",
+        "importFileReadFailed": "Failed to read import file.",
         "exportFailed": "Export failed.",
         "exportLoaded": "Current export loaded.",
+        "exportDownloaded": "Backup file download started.",
         "exportJson": "Export JSON",
         "invalidJsonField": "{field} is not a valid JSON object.",
         "defaultPasswordWarning": "You are using the default admin password \"admin\". Please change it.",
diff --git a/webui/src/locales/zh.json b/webui/src/locales/zh.json
index b5cf456..bc72328 100644
--- a/webui/src/locales/zh.json
+++ b/webui/src/locales/zh.json
@@ -240,8 +240,10 @@
         "autoDeleteWarning": "开启此功能后，每次请求完成都会删除该账号的所有历史会话，请谨慎使用。",
         "backupTitle": "备份与恢复",
         "loadExport": "加载当前导出",
+        "downloadExport": "下载备份文件",
         "importModeMerge": "合并导入（默认）",
         "importModeReplace": "全量覆盖导入",
+        "chooseImportFile": "选择导入文件",
         "importNow": "立即导入",
         "importing": "导入中...",
         "importPlaceholder": "粘贴要导入的 JSON 配置",
@@ -249,8 +251,11 @@
         "importInvalidJson": "导入 JSON 格式无效",
         "importFailed": "导入失败",
         "importSuccess": "配置导入成功（模式：{mode}）",
+        "importFileLoaded": "已读取导入文件内容",
+        "importFileReadFailed": "读取导入文件失败",
         "exportFailed": "导出失败",
         "exportLoaded": "已加载当前配置导出",
+        "exportDownloaded": "备份文件下载已开始",
         "exportJson": "导出 JSON",
         "invalidJsonField": "{field} 不是有效 JSON 对象",
         "defaultPasswordWarning": "当前使用默认密码 admin，请尽快在此修改。",