diff --git a/app/pages/storage.vue b/app/pages/storage.vue
index df35171..c5dc202 100644
--- a/app/pages/storage.vue
+++ b/app/pages/storage.vue
@@ -310,6 +310,30 @@ watch(isAuthenticated, async (authed) => {
     await loadStorage()
   }
 })
+
+const exportingCsv = ref(false)
+
+async function exportDatabaseCsv() {
+  if (exportingCsv.value) return
+  exportingCsv.value = true
+  try {
+    const blob = await $fetch<Blob>('/api/admin/export/csv', {
+      credentials: 'include',
+      responseType: 'blob'
+    })
+    const url = URL.createObjectURL(blob)
+    const link = document.createElement('a')
+    link.href = url
+    link.download = `pichost-db-${new Date().toISOString().slice(0, 10)}.tar.gz`
+    link.click()
+    URL.revokeObjectURL(url)
+    toast.add({ title: t('storage.exportCsvStarted'), color: 'success' })
+  } catch {
+    toast.add({ title: t('storage.exportCsvFailed'), color: 'error' })
+  } finally {
+    exportingCsv.value = false
+  }
+}
 </script>
 
 <template>
@@ -407,6 +431,31 @@ watch(isAuthenticated, async (authed) => {
 
           <StorageSupportedBackends />
 
+          <section class="rounded-xl border border-default bg-elevated p-5 sm:p-6">
+            <div class="flex flex-col gap-4 sm:flex-row sm:items-center sm:justify-between">
+              <div class="min-w-0">
+                <h2 class="flex items-center gap-2 text-base font-semibold">
+                  <UIcon
+                    name="i-lucide-file-archive"
+                    class="size-5 text-primary"
+                  />
+                  {{ t('storage.exportTitle') }}
+                </h2>
+                <p class="mt-1 text-sm leading-relaxed text-muted">
+                  {{ t('storage.exportDescription') }}
+                </p>
+              </div>
+              <UButton
+                :label="t('storage.exportCsv')"
+                icon="i-lucide-download"
+                color="primary"
+                :loading="exportingCsv"
+                class="shrink-0"
+                @click="exportDatabaseCsv"
+              />
+            </div>
+          </section>
+
           <section class="rounded-2xl border border-error/30 bg-error/5 p-5 sm:p-6">
             <div class="flex flex-col gap-4 sm:flex-row sm:items-center sm:justify-between">
               <div class="min-w-0">
diff --git a/i18n/locales/en.json b/i18n/locales/en.json
index 9bec352..0950c6b 100644
--- a/i18n/locales/en.json
+++ b/i18n/locales/en.json
@@ -589,6 +589,11 @@
     "badgeLocal": "Local",
     "defaultStorageTip": "All new images, videos, and files are saved to “{name}” by default. Use “Set as default” on another backend to change this.",
     "clearStorage": "Clear storage",
+    "exportTitle": "Export database tables",
+    "exportDescription": "Export every table as CSV and download them as a tar.gz archive. Passwords and tokens are masked.",
+    "exportCsv": "Export CSV archive",
+    "exportCsvStarted": "Export finished, downloading",
+    "exportCsvFailed": "Export failed",
     "clearStorageTitle": "Clear my storage",
     "clearStorageDescription": "Permanently delete every image, video, file, and cache uploaded by the current account without affecting other users.",
     "clearStorageWarning": "High-risk operation: this will clear all files and caches in storage and cannot be undone!",
diff --git a/i18n/locales/zh-CN.json b/i18n/locales/zh-CN.json
index 539ddc4..b988d49 100644
--- a/i18n/locales/zh-CN.json
+++ b/i18n/locales/zh-CN.json
@@ -589,6 +589,11 @@
     "badgeLocal": "本地",
     "defaultStorageTip": "新上传的所有图片、视频、文件将默认保存到「{name}」。可点击其他后端的「设为默认」进行修改。",
     "clearStorage": "清空存储",
+    "exportTitle": "导出数据库表",
+    "exportDescription": "把数据库中的每张表导出为 CSV，打包成 tar.gz 压缩包下载。密码、令牌等敏感字段会脱敏。",
+    "exportCsv": "导出 CSV 压缩包",
+    "exportCsvStarted": "导出完成，开始下载",
+    "exportCsvFailed": "导出失败",
     "clearStorageTitle": "清空我的存储",
     "clearStorageDescription": "永久删除当前账号上传的所有图片、视频、文件和缓存，不影响其他用户的数据。",
     "clearStorageWarning": "高危风险：此操作会清空存储中的所有文件和缓存，无法撤销！",
diff --git a/server/api/admin/export/csv.get.ts b/server/api/admin/export/csv.get.ts
new file mode 100644
index 0000000..4587970
--- /dev/null
+++ b/server/api/admin/export/csv.get.ts
@@ -0,0 +1,81 @@
+import { promises as fs } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import * as tar from 'tar'
+import { requireAdminAuth } from '../../../utils/access'
+import { getDb } from '../../../utils/db'
+import { logInfo } from '../../../utils/logger'
+
+/** CSV 字段转义 */
+function escapeCsv(value: unknown): string {
+  if (value === null || value === undefined) return ''
+  const text = String(value)
+  return /[",\n\r]/.test(text) ? `"${text.replace(/"/g, '""')}"` : text
+}
+
+/** 敏感字段脱敏：密码哈希、会话令牌、API Token、存储密钥 */
+function maskValue(column: string, value: unknown): unknown {
+  if (value === null || value === undefined) return value
+  const text = String(value)
+  if (!text) return value
+  if (column === 'password_hash' || column === 'token_hash' || column === 'api_token') {
+    return `${text.slice(0, 6)}…(${text.length})`
+  }
+  if (column === 'secret_json') return '{"hidden":true}'
+  return value
+}
+
+export default defineEventHandler(async (event) => {
+  await requireAdminAuth(event)
+
+  const db = getDb()
+  const workDir = join(tmpdir(), `pichost-csv-${Date.now()}`)
+  const outDir = join(workDir, 'csv')
+  const archiveName = `pichost-db-${new Date().toISOString().slice(0, 10)}.tar.gz`
+
+  await fs.mkdir(outDir, { recursive: true })
+
+  try {
+    const tables = db.prepare(`
+      SELECT name FROM sqlite_master
+      WHERE type = 'table' AND name NOT LIKE 'sqlite_%'
+      ORDER BY name
+    `).all() as Array<{ name: string }>
+
+    for (const table of tables) {
+      const rows = db.prepare(`SELECT * FROM "${table.name}"`).all() as Array<Record<string, unknown>>
+      const columns = rows.length
+        ? Object.keys(rows[0]!)
+        : (db.prepare(`PRAGMA table_info("${table.name}")`).all() as Array<{ name: string }>)
+            .map(column => column.name)
+
+      const lines = [
+        columns.map(column => escapeCsv(column)).join(','),
+        ...rows.map(row => columns
+          .map(column => escapeCsv(maskValue(column, row[column])))
+          .join(','))
+      ]
+
+      // 加 BOM，Excel 打开中文不乱码
+      await fs.writeFile(
+        join(outDir, `${table.name}.csv`),
+        `\uFEFF${lines.join('\r\n')}`,
+        'utf8'
+      )
+    }
+
+    await tar.c(
+      { gzip: true, file: join(workDir, archiveName), cwd: outDir, portable: true },
+      ['.']
+    )
+
+    const buffer = await fs.readFile(join(workDir, archiveName))
+    logInfo('database csv exported', { tables: tables.length, bytes: buffer.byteLength })
+
+    setHeader(event, 'Content-Type', 'application/gzip')
+    setHeader(event, 'Content-Disposition', `attachment; filename="${archiveName}"`)
+    return buffer
+  } finally {
+    await fs.rm(workDir, { recursive: true, force: true }).catch(() => {})
+  }
+})