diff --git a/apps/backend/src/repositories/admin-user-repo.js b/apps/backend/src/repositories/admin-user-repo.ts
similarity index 62%
rename from apps/backend/src/repositories/admin-user-repo.js
rename to apps/backend/src/repositories/admin-user-repo.ts
index 763ad865..db686581 100644
--- a/apps/backend/src/repositories/admin-user-repo.js
+++ b/apps/backend/src/repositories/admin-user-repo.ts
@@ -1,5 +1,43 @@
 import { query, withTransaction } from '../db/client.js'
 
+type AdminUserRow = {
+  id: number
+  username: string
+  password_hash: string
+  role: string
+  status: string
+  created_at: string
+  updated_at: string
+  inventory_group_codes: string[]
+}
+
+type AdminUserCreateInput = {
+  username: string
+  passwordHash: string
+  role: string
+  status: string
+  createdAt: string
+  updatedAt: string
+}
+
+type AdminUserPatch = Partial<Pick<
+  AdminUserRow,
+  'username' | 'password_hash' | 'role' | 'status' | 'updated_at'
+>>
+
+type AdminUserListInput = {
+  page?: number
+  pageSize?: number
+  username?: string
+  role?: string
+  status?: string
+}
+
+type AdminUserListResult = {
+  items: AdminUserRow[]
+  total: number
+}
+
 const ADMIN_USER_SELECT = `
   SELECT
     au.*,
@@ -12,24 +50,24 @@ const ADMIN_USER_SELECT = `
   ) bindings ON TRUE
 `
 
-export async function getAdminUserById(userId) {
-  const result = await query(
+export async function getAdminUserById(userId: number | string): Promise<AdminUserRow | null> {
+  const result = await query<AdminUserRow>(
     `${ADMIN_USER_SELECT} WHERE au.id = $1 LIMIT 1`,
     [Number(userId)],
   )
   return result.rows[0] || null
 }
 
-export async function getAdminUserByUsername(username) {
-  const result = await query(
+export async function getAdminUserByUsername(username: string): Promise<AdminUserRow | null> {
+  const result = await query<AdminUserRow>(
     `${ADMIN_USER_SELECT} WHERE au.username = $1 LIMIT 1`,
     [String(username || '').trim().toLowerCase()],
   )
   return result.rows[0] || null
 }
 
-export async function createAdminUser(input) {
-  const result = await query(
+export async function createAdminUser(input: AdminUserCreateInput): Promise<AdminUserRow | null> {
+  const result = await query<{ [column: string]: unknown, id: number }>(
     `
       INSERT INTO admin_users (
         username,
@@ -54,14 +92,17 @@ export async function createAdminUser(input) {
   return getAdminUserById(result.rows[0]?.id || 0)
 }
 
-export async function updateAdminUser(userId, patch) {
+export async function updateAdminUser(
+  userId: number | string,
+  patch: AdminUserPatch,
+): Promise<AdminUserRow | null> {
   const current = await getAdminUserById(userId)
   if (!current) {
     return null
   }
 
   const next = { ...current, ...patch }
-  const result = await query(
+  const result = await query<{ [column: string]: unknown, id: number }>(
     `
       UPDATE admin_users
       SET
@@ -86,10 +127,16 @@ export async function updateAdminUser(userId, patch) {
   return getAdminUserById(result.rows[0]?.id || 0)
 }
 
-export async function listAdminUsers({ page = 1, pageSize = 20, username = '', role = '', status = '' } = {}) {
+export async function listAdminUsers({
+  page = 1,
+  pageSize = 20,
+  username = '',
+  role = '',
+  status = '',
+}: AdminUserListInput = {}): Promise<AdminUserListResult> {
   const offset = (page - 1) * pageSize
-  const filters = []
-  const params = []
+  const filters: string[] = []
+  const params: unknown[] = []
 
   if (username) {
     params.push(`%${username}%`)
@@ -107,11 +154,14 @@ export async function listAdminUsers({ page = 1, pageSize = 20, username = '', r
   }
 
   const whereClause = filters.length > 0 ? `WHERE ${filters.join(' AND ')}` : ''
-  const totalResult = await query(`SELECT COUNT(*)::int AS total FROM admin_users ${whereClause}`, params)
+  const totalResult = await query<{ [column: string]: unknown, total: number }>(
+    `SELECT COUNT(*)::int AS total FROM admin_users ${whereClause}`,
+    params,
+  )
 
   params.push(pageSize)
   params.push(offset)
-  const itemsResult = await query(
+  const itemsResult = await query<AdminUserRow>(
     `
       ${ADMIN_USER_SELECT}
       ${whereClause}
@@ -127,14 +177,18 @@ export async function listAdminUsers({ page = 1, pageSize = 20, username = '', r
   }
 }
 
-export async function countActiveAdminUsers() {
-  const result = await query(
+export async function countActiveAdminUsers(): Promise<number> {
+  const result = await query<{ [column: string]: unknown, total: number }>(
     `SELECT COUNT(*)::int AS total FROM admin_users WHERE role = 'admin' AND status = 'active'`,
   )
   return Number(result.rows[0]?.total || 0)
 }
 
-export async function replaceAdminUserInventoryGroupBindings(userId, inventoryGroupCodes = [], timestamp) {
+export async function replaceAdminUserInventoryGroupBindings(
+  userId: number | string,
+  inventoryGroupCodes: unknown[] = [],
+  timestamp: string,
+): Promise<AdminUserRow | null> {
   const normalizedUserId = Number(userId)
   const normalizedCodes = Array.from(new Set((Array.isArray(inventoryGroupCodes) ? inventoryGroupCodes : [])
     .map((value) => String(value || '').trim())
diff --git a/apps/backend/src/repositories/fulfillment-profile-repo.js b/apps/backend/src/repositories/fulfillment-profile-repo.ts
similarity index 58%
rename from apps/backend/src/repositories/fulfillment-profile-repo.js
rename to apps/backend/src/repositories/fulfillment-profile-repo.ts
index 4cbdc9e2..f1027ace 100644
--- a/apps/backend/src/repositories/fulfillment-profile-repo.js
+++ b/apps/backend/src/repositories/fulfillment-profile-repo.ts
@@ -1,15 +1,106 @@
 import { query, withTransaction } from '../db/client.js'
 
-export async function getFulfillmentProfileByKey(profileKey) {
-  const result = await query(
+type FulfillmentProfileRow = {
+  id: number
+  profile_key: string
+  name: string
+  executor_key: string
+  requires_claim: boolean
+  auto_dispatch: boolean
+  inventory_strategy: string
+  config_json: string | Record<string, unknown>
+  created_at: string
+  updated_at: string
+}
+
+type FulfillmentProfileRequirementRow = {
+  id: number
+  profile_id: number
+  role_key: string
+  roleKey?: string
+  credential_type: string
+  credentialType?: string
+  quantity_per_unit: number
+  is_required: boolean
+  config_json: string | Record<string, unknown>
+  created_at: string
+  updated_at: string
+}
+
+type SkuFulfillmentBindingRow = {
+  id: number
+  sku_code: string
+  provider: string
+  platform: string
+  shop_id: string
+  profile_id: number
+  enabled: boolean
+  priority: number
+  config_json: string | Record<string, unknown>
+  created_at: string
+  updated_at: string
+  profile_key?: string
+  name?: string
+  profile_name?: string
+  executor_key?: string
+  requires_claim?: boolean
+  auto_dispatch?: boolean
+  inventory_strategy?: string
+  profile_config_json?: string | Record<string, unknown>
+}
+
+type FulfillmentProfileUpsertInput = {
+  profileKey: string
+  name: string
+  executorKey: string
+  requiresClaim?: boolean
+  autoDispatch?: boolean
+  inventoryStrategy?: string
+  configJson?: string | Record<string, unknown>
+  createdAt: string
+  updatedAt: string
+}
+
+type FulfillmentProfileRequirementInput = {
+  roleKey: string
+  credentialType: string
+  quantityPerUnit?: number | string
+  isRequired?: boolean
+  configJson?: string | Record<string, unknown>
+}
+
+type SkuFulfillmentBindingUpsertInput = {
+  skuCode: string
+  provider?: string
+  platform?: string
+  shopId?: string
+  profileId: number | string
+  enabled?: boolean
+  priority?: number | string
+  configJson?: string | Record<string, unknown>
+  createdAt: string
+  updatedAt: string
+}
+
+type FulfillmentBindingResolveInput = {
+  skuCode: string
+  provider?: string
+  platform?: string
+  shopId?: string
+}
+
+export async function getFulfillmentProfileByKey(profileKey: string): Promise<FulfillmentProfileRow | null> {
+  const result = await query<FulfillmentProfileRow>(
     'SELECT * FROM fulfillment_profiles WHERE profile_key = $1 LIMIT 1',
     [String(profileKey || '').trim()],
   )
   return result.rows[0] || null
 }
 
-export async function upsertFulfillmentProfile(input) {
-  const result = await query(
+export async function upsertFulfillmentProfile(
+  input: FulfillmentProfileUpsertInput,
+): Promise<FulfillmentProfileRow | null> {
+  const result = await query<FulfillmentProfileRow>(
     `
       INSERT INTO fulfillment_profiles (
         profile_key,
@@ -49,7 +140,11 @@ export async function upsertFulfillmentProfile(input) {
   return result.rows[0] || null
 }
 
-export async function replaceFulfillmentProfileRequirements(profileId, requirements = [], timestamp) {
+export async function replaceFulfillmentProfileRequirements(
+  profileId: number | string,
+  requirements: FulfillmentProfileRequirementInput[] = [],
+  timestamp: string,
+): Promise<void> {
   await withTransaction(async (client) => {
     await client.query(
       'DELETE FROM fulfillment_profile_requirements WHERE profile_id = $1',
@@ -85,8 +180,10 @@ export async function replaceFulfillmentProfileRequirements(profileId, requireme
   })
 }
 
-export async function listFulfillmentProfileRequirements(profileId) {
-  const result = await query(
+export async function listFulfillmentProfileRequirements(
+  profileId: number | string,
+): Promise<FulfillmentProfileRequirementRow[]> {
+  const result = await query<FulfillmentProfileRequirementRow>(
     `
       SELECT *
       FROM fulfillment_profile_requirements
@@ -99,8 +196,10 @@ export async function listFulfillmentProfileRequirements(profileId) {
   return result.rows
 }
 
-export async function upsertSkuFulfillmentBinding(input) {
-  const existing = await query(
+export async function upsertSkuFulfillmentBinding(
+  input: SkuFulfillmentBindingUpsertInput,
+): Promise<SkuFulfillmentBindingRow | null> {
+  const existing = await query<SkuFulfillmentBindingRow>(
     `
       SELECT *
       FROM sku_fulfillment_bindings
@@ -111,7 +210,7 @@ export async function upsertSkuFulfillmentBinding(input) {
   )
 
   if (!existing.rows[0]) {
-    const inserted = await query(
+    const inserted = await query<SkuFulfillmentBindingRow>(
       `
         INSERT INTO sku_fulfillment_bindings (
           sku_code,
@@ -144,7 +243,7 @@ export async function upsertSkuFulfillmentBinding(input) {
     return inserted.rows[0] || null
   }
 
-  const updated = await query(
+  const updated = await query<SkuFulfillmentBindingRow>(
     `
       UPDATE sku_fulfillment_bindings
       SET
@@ -169,8 +268,13 @@ export async function upsertSkuFulfillmentBinding(input) {
   return updated.rows[0] || null
 }
 
-export async function resolveFulfillmentBinding({ skuCode, provider = '', platform = '', shopId = '' }) {
-  const result = await query(
+export async function resolveFulfillmentBinding({
+  skuCode,
+  provider = '',
+  platform = '',
+  shopId = '',
+}: FulfillmentBindingResolveInput): Promise<SkuFulfillmentBindingRow | null> {
+  const result = await query<SkuFulfillmentBindingRow>(
     `
       SELECT
         sfb.*,
diff --git a/apps/backend/src/repositories/product-match-rule-repo.js b/apps/backend/src/repositories/product-match-rule-repo.ts
similarity index 74%
rename from apps/backend/src/repositories/product-match-rule-repo.js
rename to apps/backend/src/repositories/product-match-rule-repo.ts
index 1d88ab4b..9c77b611 100644
--- a/apps/backend/src/repositories/product-match-rule-repo.js
+++ b/apps/backend/src/repositories/product-match-rule-repo.ts
@@ -1,7 +1,53 @@
 import { query } from '../db/client.js'
 
-export async function upsertProductMatchRule(input) {
-  const result = await query(
+type ProductMatchRuleRow = {
+  id: number
+  provider: string
+  platform: string
+  shop_id: string
+  external_item_id: string
+  external_sku_code: string
+  external_sku_name: string
+  external_sku_name_normalized: string
+  resolved_sku_code: string
+  enabled: boolean
+  priority: number
+  config_json: string | Record<string, unknown>
+  created_at: string
+  updated_at: string
+  matched_by?: string
+  match_score?: number
+}
+
+type ProductMatchRuleUpsertInput = {
+  provider?: string
+  platform?: string
+  shopId?: string
+  externalItemId?: string
+  externalSkuCode?: string
+  externalSkuName?: string
+  externalSkuNameNormalized?: string
+  resolvedSkuCode: string
+  enabled?: boolean
+  priority?: number | string
+  configJson?: string | Record<string, unknown>
+  createdAt: string
+  updatedAt: string
+}
+
+type ProductMatchRuleResolveInput = {
+  provider?: string
+  platform?: string
+  shopId?: string
+  externalItemId?: string
+  externalSkuCode?: string
+  externalSkuNameNormalized?: string
+}
+
+export async function upsertProductMatchRule(
+  input: ProductMatchRuleUpsertInput,
+): Promise<ProductMatchRuleRow | null> {
+  const result = await query<ProductMatchRuleRow>(
     `
       INSERT INTO product_match_rules (
         provider,
@@ -64,8 +110,8 @@ export async function resolveProductMatchRule({
   externalItemId = '',
   externalSkuCode = '',
   externalSkuNameNormalized = '',
-}) {
-  const result = await query(
+}: ProductMatchRuleResolveInput): Promise<ProductMatchRuleRow | null> {
+  const result = await query<ProductMatchRuleRow>(
     `
       SELECT
         pmr.*,
diff --git a/docs/backend-typescript-migration-plan.md b/docs/backend-typescript-migration-plan.md
index 110c3081..66769d89 100644
--- a/docs/backend-typescript-migration-plan.md
+++ b/docs/backend-typescript-migration-plan.md
@@ -224,12 +224,16 @@
     - `src/repositories/message-delivery-repo.ts`
     - `src/repositories/webhook-event-repo.ts`
 13. `MessageDeliveryRow` 与列表查询结果已进入共享 repository row 类型
+14. 小型 repository 第三批已迁移到 `.ts`：
+    - `src/repositories/admin-user-repo.ts`
+    - `src/repositories/product-match-rule-repo.ts`
+    - `src/repositories/fulfillment-profile-repo.ts`
 
 ## 下一步建议
 
 第一批继续推进时，建议按这个顺序：
 
-1. 继续迁移剩余 repository：`admin-user-repo`、`inventory-repo`、`order-repo`、`task-repo`
+1. 继续迁移剩余核心 repository：`inventory-repo`、`order-repo`、`task-repo`
 2. 拆分并迁移 `runtime.js`，把 env 解析、默认配置加载、配置合并分开
 3. 为 webhook、库存换码、自动发货补测试