diff --git a/apps/backend/src/services/order/fulfillment-binding-config-service.js b/apps/backend/src/services/order/fulfillment-binding-config-service.ts
similarity index 94%
rename from apps/backend/src/services/order/fulfillment-binding-config-service.js
rename to apps/backend/src/services/order/fulfillment-binding-config-service.ts
index b21a93ab..63ca7257 100644
--- a/apps/backend/src/services/order/fulfillment-binding-config-service.js
+++ b/apps/backend/src/services/order/fulfillment-binding-config-service.ts
@@ -5,6 +5,8 @@ import { PROJECT_ROOT } from '../../config/runtime.js'
 
 const ORDER_FULFILLMENT_BINDINGS_FILE_PATH = path.join(PROJECT_ROOT, 'data', 'order-fulfillment-bindings.json')
 
+type JsonObject = Record<string, any>
+
 export function getOrderFulfillmentBindingsFilePath() {
   return ORDER_FULFILLMENT_BINDINGS_FILE_PATH
 }
@@ -52,11 +54,11 @@ function normalizeOrderFulfillmentBindingConfigs(rawValue) {
     .filter(Boolean)
 }
 
-export function filterLegacyOrderFulfillmentBindings(bindings = []) {
+export function filterLegacyOrderFulfillmentBindings(bindings: any[] = []) {
   return (Array.isArray(bindings) ? bindings : []).filter((item) => !isKuaishouCloudFulfillmentBinding(item))
 }
 
-export function isKuaishouCloudFulfillmentBinding(binding = {}) {
+export function isKuaishouCloudFulfillmentBinding(binding: JsonObject = {}) {
   return String(binding?.provider || '').trim() === '91kaquan'
     && String(binding?.platform || '').trim() === 'kuaishou'
 }
diff --git a/apps/backend/src/services/order/kuaishou-cloud-fulfillment-config-service.js b/apps/backend/src/services/order/kuaishou-cloud-fulfillment-config-service.ts
similarity index 99%
rename from apps/backend/src/services/order/kuaishou-cloud-fulfillment-config-service.js
rename to apps/backend/src/services/order/kuaishou-cloud-fulfillment-config-service.ts
index 06c61173..e8156159 100644
--- a/apps/backend/src/services/order/kuaishou-cloud-fulfillment-config-service.js
+++ b/apps/backend/src/services/order/kuaishou-cloud-fulfillment-config-service.ts
@@ -10,6 +10,8 @@ const KUAISHOU_CLOUD_FULFILLMENT_FILE_PATH = path.join(
   "kuaishou-cloud-fulfillment.json"
 );
 
+type JsonObject = Record<string, any>;
+
 export function getKuaishouCloudFulfillmentFilePath() {
   return KUAISHOU_CLOUD_FULFILLMENT_FILE_PATH;
 }
@@ -31,7 +33,7 @@ export function saveKuaishouCloudFulfillmentConfig(rawValue) {
   return normalized;
 }
 
-export function mapKuaishouCloudFulfillmentItemsToBindings(config = {}) {
+export function mapKuaishouCloudFulfillmentItemsToBindings(config: JsonObject = {}) {
   const items = Array.isArray(config.items) ? config.items : [];
 
   return items
diff --git a/docs/backend-typescript-migration-plan.md b/docs/backend-typescript-migration-plan.md
index 3a74d7c2..2b51901d 100644
--- a/docs/backend-typescript-migration-plan.md
+++ b/docs/backend-typescript-migration-plan.md
@@ -527,6 +527,15 @@
     - `npm run typecheck`
     - `npm run build`
     - `npm test` 共 139 个用例通过
+117. 订单履约配置模块迁移到 `.ts`：
+    - `src/services/order/fulfillment-binding-config-service.ts`
+    - `src/services/order/kuaishou-cloud-fulfillment-config-service.ts`
+118. 订单履约绑定过滤、快手 Cloud 配置读取 / 保存 / 映射到履约绑定已进入 TS 编译链路；默认动态配置对象补齐类型
+119. Docker 内验证通过：
+    - `src/services/order/fulfillment-binding-config-service.test.js`、`src/services/order/kuaishou-cloud-fulfillment-config-service.test.js` 共 3 个用例通过
+    - `npm run typecheck`
+    - `npm run build`
+    - `npm test` 共 139 个用例通过
 
 ## 下一步建议