diff --git a/src/api/oa/crm/shippingTariff/index.ts b/src/api/oa/crm/shippingTariff/index.ts
new file mode 100644
index 0000000..f838542
--- /dev/null
+++ b/src/api/oa/crm/shippingTariff/index.ts
@@ -0,0 +1,28 @@
+import request from '@/utils/request';
+import { AxiosPromise } from 'axios';
+
+/**
+ * 邮寄资费最优方案视图对象
+ */
+export interface CrmShippingTariffVO {
+  tariffId: string | number;
+  province: string;
+  weightKg: number;
+  queryCond: string;
+  solutionName: string;
+  price: number;
+  remark: string;
+}
+
+/**
+ * 查询最优惠方案
+ * @param province 省份
+ * @param weight 重量
+ */
+export const getBestSolution = (province: string, weight: number): AxiosPromise<CrmShippingTariffVO> => {
+  return request({
+    url: '/oa/crm/shippingTariff/getBestSolution',
+    method: 'get',
+    params: { province, weight }
+  });
+};