diff --git a/src/index.ts b/src/index.ts
index c190efd..0f31bc9 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -3,6 +3,7 @@ export * from './libs/WxIsvConst'
 export { WxIsvStorage } from './libs/WxIsvStorage'
 export { WxIsvAuthService } from './services/WxIsvAuthService'
 export { WxIsvCategoryService } from './services/WxIsvCategoryService'
+export { WxIsvChargeService } from './services/WxIsvChargeService'
 export { WxIsvComplainService } from './services/WxIsvComplainService'
 export { WxIsvDomainService } from './services/WxIsvDomainService'
 export { WxIsvExpressService } from './services/WxIsvExpressService'
diff --git a/src/services/WxIsvChargeService.ts b/src/services/WxIsvChargeService.ts
new file mode 100644
index 0000000..927b3d1
--- /dev/null
+++ b/src/services/WxIsvChargeService.ts
@@ -0,0 +1,96 @@
+import { _ } from 'coa-helper'
+import { WxIsvServiceBase } from '../libs/WxIsvServiceBase'
+
+interface WxSmAccessToken {
+  token: string
+  expireOn: number
+}
+
+export class WxIsvChargeService extends WxIsvServiceBase {
+  async getAccessToken() {
+    const cacheName = `WxSmAccessToken:${this.bin.config.wxSmConfig.appId}`
+
+    const result = (await this.bin.storage.get<WxSmAccessToken>(cacheName)) ?? { token: '', expireOn: 0 }
+    if (!result.token) {
+      const { appId, secret } = this.bin.config.wxSmConfig
+      const data = await this.request('GET', '/cgi-bin/token', {}, { grant_type: 'client_credential', appid: appId, secret })
+
+      const ms = _.toInteger(data.expiresIn) * 1e3 - 10 * 1e3
+      result.expireOn = _.now() + ms
+      result.token = data.accessToken || ''
+
+      await this.bin.storage.set(cacheName, result, ms)
+    }
+
+    return result.token
+  }
+
+  /**
+   * 查询购买资源包的用量情况
+   * 小程序可通过本接口查询已购买资源包的用量情况
+   * 详见 https://developers.weixin.qq.com/miniprogram/dev/platform-capabilities/charge/api/charge_get_usage_detail.html
+   * @param access_token 接口调用凭证，该参数为 URL 参数，非 Body 参数
+   * @param spuId 商品SPU ID，集采-手机号快速验证组件：10000117，集采-手机号实时验证组件：10000120
+   * @param offset 分页偏移量，从0开始
+   * @param limit 每页个数，最大20
+   */
+  async getUsageDetail(access_token: string, spuId = '10000117', offset = 0, limit= 20) {
+    return await this.request(
+      'GET',
+      '/wxa/charge/usage/get',
+      {},
+      { access_token, spuId, offset, limit }
+    )
+  }
+
+  /**
+   * 查询订单列表
+   * 服务商可通过本接口查询已购买商品的订单列表
+   * 详见 https://developers.weixin.qq.com/doc/oplatform/service_market/charge/api/charge_sp_query_order_list.html
+   * @param spuId 商品SPU ID，集采-手机号快速验证组件：10000117，集采-手机号实时验证组件：10000120
+   * @param offset 分页偏移量，从0开始
+   * @param limit 每页个数，最大20
+   */
+  async queryOrderList(spuId = '10000117', offset = 0, limit= 20): Promise<any> {
+    return await this.request(
+      'POST',
+      '/wxa/charge/service-provider/order/query_list',
+      { spuId, offset, limit },
+      { access_token: await this.getAccessToken() }
+    )
+  }
+
+  /**
+   * 查询可分配的sku列表
+   * 服务商采购商品后，可通过本接口查询已购买资源包可分配的sku列表
+   * 详见 https://developers.weixin.qq.com/doc/oplatform/service_market/charge/api/charge_sp_get_convertible_skus.html
+   * @param spSpuId 服务商采购的批发商品SPU ID
+   * @param spSkuId 服务商采购的批发商品SKU ID
+   */
+  async getConvertibleSkus(spSpuId: string, spSkuId: string): Promise<any> {
+    return await this.request(
+      'GET',
+      '/wxa/charge/service-provider/package/get_convertible_skus',
+      {},
+      { access_token: await this.getAccessToken(), spSpuId, spSkuId }
+    )
+  }
+
+  /**
+   * 服务商分配资源包
+   * 服务商在购买商品后，可通过本接口为指定的小程序分配资源包
+   * 详见 https://developers.weixin.qq.com/doc/oplatform/service_market/charge/api/charge_sp_assign_package.html
+   * @param orderId 要分配的服务商订单ID，如 DD2970445798112968704
+   * @param skuId 期望分配给小程序的商品SKU ID
+   * @param receiverAppId 要分配的小程序AppID
+   * @param requestId 唯一请求ID，同一次分配请求需唯一，同一订单号同一requestId多次请求等同一次。requestId应为10-64位长的字符串
+   */
+  async assignPackage(orderId: string, skuId: string, receiverAppId: string, requestId: string): Promise<any> {
+    return await this.request(
+      'POST',
+      '/wxa/charge/service-provider/package/assign',
+      { orderId, skuId, receiverAppId, requestId },
+      { access_token: await this.getAccessToken() }
+    )
+  }
+}
diff --git a/src/test/paly-urllink.ts b/src/test/paly-urllink.ts
index d012a6a..495b271 100644
--- a/src/test/paly-urllink.ts
+++ b/src/test/paly-urllink.ts
@@ -5,6 +5,10 @@ export default async () => {
     appId: 'wxe4fe827fc87f0000',
     appSecret: '04277da11000000000000000ddc25c063',
     appToken: 'B0D791C6AAAAAAAAAAAAAAAA874DFEDEC8',
+    wxSmConfig: {
+      appId: '',
+      secret: '',
+    }
   }
 
   // 初始化Bin实例
diff --git a/src/typings.ts b/src/typings.ts
index d2c9533..dce01c4 100644
--- a/src/typings.ts
+++ b/src/typings.ts
@@ -93,6 +93,10 @@ const wxIsvConfig = {
   appId: '',
   appSecret: '',
   appToken: '',
+  wxSmConfig: {
+    appId: '',
+    secret: '',
+  }
 }
 
 const wxIsvNormalResponse = {