diff --git a/admin-frontend-vue/src/pages/asin/dedupe-import-api.ts b/admin-frontend-vue/src/pages/asin/dedupe-import-api.ts
index 36774479..52725d85 100644
--- a/admin-frontend-vue/src/pages/asin/dedupe-import-api.ts
+++ b/admin-frontend-vue/src/pages/asin/dedupe-import-api.ts
@@ -1,6 +1,6 @@
 /** 去重汇总导入启动适配（任务 65）：multipart POST /import(file+groupId) → importId。 */
 import { http } from '@/api/http'
-import { parseDedupeImportStart } from './dedupe-import-model'
+import { parseDedupeImportProgress, parseDedupeImportStart, type DedupeImportProgress } from './dedupe-import-model'
 
 export const DEDUPE_IMPORT_ENDPOINT = '/api/admin/dedupe-total-data/import'
 
@@ -11,3 +11,9 @@ export async function startDedupeImport(file: File, groupId: number): Promise<st
   const { data } = await http.post<unknown>(DEDUPE_IMPORT_ENDPOINT, form)
   return parseDedupeImportStart(data)
 }
+
+/** 查询导入进度：GET /import/{importId}。 */
+export async function fetchDedupeImportProgress(importId: string): Promise<DedupeImportProgress> {
+  const { data } = await http.get<unknown>(`${DEDUPE_IMPORT_ENDPOINT}/${importId}`)
+  return parseDedupeImportProgress(data)
+}
diff --git a/admin-frontend-vue/src/pages/asin/dedupe-import-model.ts b/admin-frontend-vue/src/pages/asin/dedupe-import-model.ts
index 6204f542..e7bc5fde 100644
--- a/admin-frontend-vue/src/pages/asin/dedupe-import-model.ts
+++ b/admin-frontend-vue/src/pages/asin/dedupe-import-model.ts
@@ -16,3 +16,54 @@ export function parseDedupeImportStart(payload: unknown): string {
   if (!importId) throw new Error('导入任务响应异常：缺少任务 ID')
   return importId
 }
+
+export type DedupeImportStatus = 'pending' | 'running' | 'success' | 'failed'
+
+export interface DedupeImportProgress {
+  status: DedupeImportStatus
+  totalRows: number
+  processedRows: number
+  asinCount: number
+  insertedCount: number
+  skippedCount: number
+  errorMessage?: string
+}
+
+function intOrZero(value: unknown): number {
+  return typeof value === 'number' && Number.isFinite(value) ? Math.floor(value) : 0
+}
+
+/** 归一化导入进度负载；缺省按未开始(pending)处理，未知状态不改。 */
+export function parseDedupeImportProgress(payload: unknown): DedupeImportProgress {
+  const data = unwrap<unknown>(payload)
+  const record = data && typeof data === 'object' ? (data as Record<string, unknown>) : null
+  const rawStatus = typeof record?.status === 'string' ? record.status.trim().toLowerCase() : ''
+  const status: DedupeImportStatus =
+    rawStatus === 'running' || rawStatus === 'success' || rawStatus === 'failed' || rawStatus === 'pending'
+      ? rawStatus
+      : 'pending'
+  const progress: DedupeImportProgress = {
+    status,
+    totalRows: intOrZero(record?.totalRows),
+    processedRows: intOrZero(record?.processedRows),
+    asinCount: intOrZero(record?.asinCount),
+    insertedCount: intOrZero(record?.insertedCount),
+    skippedCount: intOrZero(record?.skippedCount),
+  }
+  const errorMessage =
+    typeof record?.errorMessage === 'string' && record.errorMessage.trim()
+      ? record.errorMessage.trim()
+      : undefined
+  if (errorMessage) progress.errorMessage = errorMessage
+  return progress
+}
+
+/** 是否到达终态(success/failed)。 */
+export function importTaskFinished(progress: Pick<DedupeImportProgress, 'status'>): boolean {
+  return progress.status === 'success' || progress.status === 'failed'
+}
+
+/** 是否成功完成。 */
+export function importTaskSucceeded(progress: Pick<DedupeImportProgress, 'status'>): boolean {
+  return progress.status === 'success'
+}
diff --git a/admin-frontend-vue/tests/task-66.test.ts b/admin-frontend-vue/tests/task-66.test.ts
new file mode 100644
index 00000000..e92ed6ca
--- /dev/null
+++ b/admin-frontend-vue/tests/task-66.test.ts
@@ -0,0 +1,88 @@
+import test from 'node:test'
+import assert from 'node:assert/strict'
+import { readSource } from './helpers.ts'
+import {
+  importTaskFinished,
+  importTaskSucceeded,
+  parseDedupeImportProgress,
+} from '../src/pages/asin/dedupe-import-model.ts'
+
+test('test_task_066_dedupe_import_poll_normal_primary_path', () => {
+  // 正常主路径：解析 running 进度（含各计数）。
+  const progress = parseDedupeImportProgress({
+    success: true,
+    data: {
+      status: 'running',
+      totalRows: 100,
+      processedRows: 40,
+      asinCount: 38,
+      insertedCount: 20,
+      skippedCount: 18,
+      errorMessage: '',
+    },
+  })
+  assert.equal(progress.status, 'running')
+  assert.equal(progress.totalRows, 100)
+  assert.equal(progress.processedRows, 40)
+  assert.equal(progress.insertedCount, 20)
+  assert.equal(importTaskFinished(progress), false)
+})
+
+test('test_task_066_dedupe_import_poll_normal_variant_input', () => {
+  // 正常变体：success 终态判定成功且不再轮询。
+  const progress = parseDedupeImportProgress({ success: true, data: { status: 'success', insertedCount: 9 } })
+  assert.equal(progress.insertedCount, 9)
+  assert.equal(importTaskSucceeded(progress), true)
+  assert.equal(importTaskFinished(progress), true)
+})
+
+test('test_task_066_dedupe_import_poll_normal_repeated_operation_is_idempotent', () => {
+  // 正常重复：解析不改输入、结果稳定。
+  const payload = { success: true, data: { status: 'pending' } }
+  assert.deepEqual(parseDedupeImportProgress(payload), parseDedupeImportProgress(payload))
+})
+
+test('test_task_066_dedupe_import_poll_boundary_empty_input', () => {
+  // 边界空值：空负载按未开始(pending)处理，不崩溃。
+  const progress = parseDedupeImportProgress({})
+  assert.equal(progress.status, 'pending')
+  assert.equal(importTaskFinished(progress), false)
+})
+
+test('test_task_066_dedupe_import_poll_boundary_single_item', () => {
+  // 边界单元素：缺省计数为 0。
+  const progress = parseDedupeImportProgress({ success: true, data: { status: 'running' } })
+  assert.equal(progress.processedRows, 0)
+  assert.equal(progress.asinCount, 0)
+})
+
+test('test_task_066_dedupe_import_poll_boundary_limit_or_missing_field', () => {
+  // 边界上限/缺字段：failed 终态判定完成但未成功，错误信息可读。
+  const progress = parseDedupeImportProgress({
+    success: true,
+    data: { status: 'failed', errorMessage: '某行 ASIN 格式错误' },
+  })
+  assert.equal(importTaskFinished(progress), true)
+  assert.equal(importTaskSucceeded(progress), false)
+  assert.match(progress.errorMessage || '', /格式错误/)
+})
+
+test('test_task_066_dedupe_import_poll_invalid_input_rejected', () => {
+  // 异常输入：success=false 抛后端 message；未知状态按未完成处理。
+  assert.throws(
+    () => parseDedupeImportProgress({ success: false, message: '无权查看导入进度' }),
+    /无权查看/,
+  )
+  const weird = parseDedupeImportProgress({ success: true, data: { status: 'weird' } })
+  assert.equal(importTaskFinished(weird), false)
+})
+
+test('test_task_066_dedupe_import_poll_dependency_failure_returns_actionable_message', () => {
+  // 依赖失败/轮询走 adapter：GET /import/{importId} 解析进度。
+  const api = readSource('src/pages/asin/dedupe-import-api.ts')
+  assert.match(api, /fetchDedupeImportProgress|importProgress/)
+  assert.match(api, /import\/\$\{?importId|import\/\{importId\}/)
+  assert.match(api, /parseDedupeImportProgress/)
+  const mod = readSource('src/pages/asin/dedupe-import-model.ts')
+  assert.equal(/axios|http\./.test(mod), false, '导入进度模型保持纯逻辑')
+})