diff --git a/admin-frontend-vue/src/pages/shop/shop-manage-api.ts b/admin-frontend-vue/src/pages/shop/shop-manage-api.ts
index aebbcfa0..75c6033e 100644
--- a/admin-frontend-vue/src/pages/shop/shop-manage-api.ts
+++ b/admin-frontend-vue/src/pages/shop/shop-manage-api.ts
@@ -1,6 +1,7 @@
-/** 店铺列表加载与分组选项适配（任务 88/90）：GET /api/admin/shop-manages(/groups) + 归一与解析。 */
+/** 店铺列表/分组/新增适配（任务 88/90/91）：GET|POST /api/admin/shop-manages + 归一与解析。 */
 import { http } from '@/api/http'
-import { parseShopManagePage } from './shop-manage-model.ts'
+import { unwrap } from '@/api/envelope'
+import { parseShopManagePage, toShopSummary } from './shop-manage-model.ts'
 import { parseShopManageGroups } from './shop-group-model.ts'
 import {
   normalizeShopListParams,
@@ -8,7 +9,13 @@ import {
   type ShopGroupOption,
   type ShopManageListParams,
   type ShopPageResult,
+  type ShopSummary,
 } from './shop-dto.ts'
+import {
+  toShopManageCreateRequest,
+  validateShopManageForm,
+  type ShopManageFormValues,
+} from './shop-manage-form-model.ts'
 
 export const SHOP_MANAGE_ENDPOINT = '/api/admin/shop-manages'
 
@@ -25,3 +32,17 @@ export async function fetchShopManageGroups(): Promise<ShopGroupOption[]> {
   const { data } = await http.get<unknown>(SHOP_MANAGE_GROUPS_ENDPOINT)
   return parseShopManageGroups(data)
 }
+
+/** 提交新增店铺：先校验（失败抛首条错误不发请求），POST /api/admin/shop-manages，解析返回记录。 */
+export async function submitCreateShopManage(form: ShopManageFormValues, createdById: number): Promise<ShopSummary> {
+  const { valid, errors } = validateShopManageForm(form)
+  if (!valid) {
+    throw new Error(Object.values(errors)[0] || '店铺表单校验未通过')
+  }
+  const { data } = await http.post<unknown>(SHOP_MANAGE_ENDPOINT, toShopManageCreateRequest(form, createdById))
+  const item = toShopSummary(unwrap<unknown>(data))
+  if (!item) {
+    throw new Error('新增店铺响应异常：未返回有效记录')
+  }
+  return item
+}
diff --git a/admin-frontend-vue/src/pages/shop/shop-manage-form-model.ts b/admin-frontend-vue/src/pages/shop/shop-manage-form-model.ts
new file mode 100644
index 00000000..6e94f860
--- /dev/null
+++ b/admin-frontend-vue/src/pages/shop/shop-manage-form-model.ts
@@ -0,0 +1,90 @@
+/** 店铺新增/编辑共用表单模型（任务 91/92）：镜像 Java ShopManageCreateRequest/UpdateRequest 的
+ * 必填与长度校验、敏感密码字段处理与 camelCase 请求序列化；纯逻辑。 */
+
+export const SHOP_MANAGE_ZN_USERNAME_MAX_LEN = 128
+
+/** 店铺表单字段（密码为敏感字段，仅本次提交内存中使用，不写入日志/存储）。 */
+export interface ShopManageFormValues {
+  groupId: number | null
+  shopName: string
+  mallName: string
+  znUsername: string
+  account: string
+  password: string
+}
+
+export interface ShopManageFormErrors {
+  groupId?: string
+  shopName?: string
+  mallName?: string
+  account?: string
+  password?: string
+  znUsername?: string
+}
+
+/** 发送 POST /api/admin/shop-manages 的请求体（与 Java ShopManageCreateRequest camelCase 对齐）。 */
+export interface ShopManageCreatePayload {
+  groupId: number
+  shopName: string
+  mallName: string
+  account: string
+  password: string
+  createdById: number
+  znUsername?: string
+}
+
+export function emptyShopManageForm(): ShopManageFormValues {
+  return { groupId: null, shopName: '', mallName: '', znUsername: '', account: '', password: '' }
+}
+
+function positiveGroupId(value: number | null): number | null {
+  return typeof value === 'number' && Number.isFinite(value) && value >= 1 ? Math.floor(value) : null
+}
+
+function requiredText(value: string, fallback: string): string {
+  return (value || '').trim() || fallback
+}
+
+function errorText(value: string): string {
+  return (value || '').trim() || ''
+}
+
+/** 校验表单（镜像后端 NotBlank/NotNull/Size 规则），返回逐字段错误。 */
+export function validateShopManageForm(form: ShopManageFormValues): { valid: boolean; errors: ShopManageFormErrors } {
+  const errors: ShopManageFormErrors = {}
+  if (positiveGroupId(form.groupId) === null) {
+    errors.groupId = '分组不能为空'
+  }
+  if (!errorText(form.shopName)) errors.shopName = '店铺名称不能为空'
+  if (!errorText(form.mallName)) errors.mallName = '商城名称不能为空'
+  if (!errorText(form.account)) errors.account = '账号不能为空'
+  if (!errorText(form.password)) errors.password = '密码不能为空'
+  const znUsername = (form.znUsername || '').trim()
+  if (znUsername.length > SHOP_MANAGE_ZN_USERNAME_MAX_LEN) {
+    errors.znUsername = `自动化账号长度不能超过${SHOP_MANAGE_ZN_USERNAME_MAX_LEN}个字符`
+  }
+  return { valid: Object.keys(errors).length === 0, errors }
+}
+
+/** 新增表单 → 创建请求体；缺有效分组/必填时抛可操作错误（调用前应先校验）。 */
+export function toShopManageCreateRequest(form: ShopManageFormValues, createdById: number): ShopManageCreatePayload {
+  const groupId = positiveGroupId(form.groupId)
+  if (groupId === null) {
+    throw new Error('分组不能为空')
+  }
+  if (!errorText(form.shopName)) throw new Error('店铺名称不能为空')
+  if (!errorText(form.mallName)) throw new Error('商城名称不能为空')
+  if (!errorText(form.account)) throw new Error('账号不能为空')
+  if (!errorText(form.password)) throw new Error('密码不能为空')
+  const payload: ShopManageCreatePayload = {
+    groupId,
+    shopName: errorText(form.shopName),
+    mallName: errorText(form.mallName),
+    account: errorText(form.account),
+    password: errorText(form.password),
+    createdById,
+  }
+  const znUsername = (form.znUsername || '').trim()
+  if (znUsername) payload.znUsername = znUsername
+  return payload
+}
diff --git a/admin-frontend-vue/tests/task-91.test.ts b/admin-frontend-vue/tests/task-91.test.ts
new file mode 100644
index 00000000..30ba3224
--- /dev/null
+++ b/admin-frontend-vue/tests/task-91.test.ts
@@ -0,0 +1,87 @@
+import test from 'node:test'
+import assert from 'node:assert/strict'
+import { readSource } from './helpers.ts'
+import {
+  emptyShopManageForm,
+  toShopManageCreateRequest,
+  validateShopManageForm,
+} from '../src/pages/shop/shop-manage-form-model.ts'
+
+test('test_task_091_shop_manage_create_form_normal_primary_path', () => {
+  // 正常主路径：合法表单校验通过并序列化为 Java camelCase 创建请求体。
+  const form = { groupId: 3, shopName: 'BlueWave', mallName: '亚马逊美国站', znUsername: 'robot', account: 'sale@blue.com', password: 'p@ss' }
+  const { valid, errors } = validateShopManageForm(form)
+  assert.equal(valid, true)
+  assert.deepEqual(errors, {})
+  assert.deepEqual(toShopManageCreateRequest(form, 8), {
+    groupId: 3,
+    shopName: 'BlueWave',
+    mallName: '亚马逊美国站',
+    znUsername: 'robot',
+    account: 'sale@blue.com',
+    password: 'p@ss',
+    createdById: 8,
+  })
+})
+
+test('test_task_091_shop_manage_create_form_normal_variant_input', () => {
+  // 正常变体：znUsername 可选留空不下发；字段首尾空白去除。
+  const request = toShopManageCreateRequest(
+    { groupId: 1, shopName: ' A店 ', mallName: ' M ', znUsername: '   ', account: 'acc', password: 'p' },
+    2,
+  )
+  assert.equal(request.shopName, 'A店')
+  assert.equal(request.mallName, 'M')
+  assert.equal('znUsername' in request, false)
+})
+
+test('test_task_091_shop_manage_create_form_repeated_is_idempotent', () => {
+  // 正常重复：序列化不改输入、结果稳定。
+  const form = { groupId: 2, shopName: 'S', mallName: 'M', znUsername: '', account: 'a', password: 'p' }
+  assert.deepEqual(toShopManageCreateRequest(form, 1), toShopManageCreateRequest(form, 1))
+  assert.equal((form as { shopName: string }).shopName, 'S')
+})
+
+test('test_task_091_shop_manage_create_form_boundary_empty_input', () => {
+  // 边界空值：空表单校验给出必填字段错误。
+  const { valid, errors } = validateShopManageForm(emptyShopManageForm())
+  assert.equal(valid, false)
+  assert.equal(errors.groupId, '分组不能为空')
+  assert.equal(errors.shopName, '店铺名称不能为空')
+  assert.equal(errors.account, '账号不能为空')
+  assert.equal(errors.password, '密码不能为空')
+})
+
+test('test_task_091_shop_manage_create_form_boundary_single_item', () => {
+  // 边界单元素：最短合法表单通过。
+  const { valid } = validateShopManageForm({ groupId: 1, shopName: 'S', mallName: 'M', znUsername: '', account: 'a', password: 'p' })
+  assert.equal(valid, true)
+})
+
+test('test_task_091_shop_manage_create_form_boundary_limit_or_missing_field', () => {
+  // 边界上限/缺字段：znUsername 超长拒绝，缺分组序列化不产生无效请求。
+  const overZn = validateShopManageForm({ groupId: 1, shopName: 'S', mallName: 'M', znUsername: 'x'.repeat(129), account: 'a', password: 'p' })
+  assert.equal(overZn.valid, false)
+  assert.match(overZn.errors.znUsername || '', /128/)
+  assert.throws(() => toShopManageCreateRequest({ ...emptyShopManageForm(), shopName: 'S' }, 1), /分组/)
+})
+
+test('test_task_091_shop_manage_create_form_invalid_input_rejected', () => {
+  // 异常输入：空白店铺名/账号/密码与未选分组被拒。
+  const { errors } = validateShopManageForm({ groupId: null, shopName: '  ', mallName: '', znUsername: '', account: '', password: '   ' })
+  assert.equal(errors.groupId, '分组不能为空')
+  assert.equal(errors.shopName, '店铺名称不能为空')
+  assert.equal(errors.account, '账号不能为空')
+  assert.equal(errors.password, '密码不能为空')
+})
+
+test('test_task_091_shop_manage_create_form_dependency_failure_returns_actionable_message', () => {
+  // 依赖失败/提交走 adapter：表单模型纯逻辑，adapter POST /api/admin/shop-manages。
+  const model = readSource('src/pages/shop/shop-manage-form-model.ts')
+  assert.equal(/axios|http\.|vue/.test(model), false, '表单模型保持纯逻辑')
+  assert.match(model, /敏感|密码/)
+  const api = readSource('src/pages/shop/shop-manage-api.ts')
+  assert.match(api, /submitCreateShopManage/)
+  assert.match(api, /http\.post/)
+  assert.match(api, /\/api\/admin\/shop-manages/)
+})