diff --git a/docs/api/plugins/payment.md b/docs/api/plugins/payment.md
index 5138befe3454f376692a87dcc756d29544262139..8a914718417ae257c3b544856f2eafe587a8dacf 100644
--- a/docs/api/plugins/payment.md
+++ b/docs/api/plugins/payment.md
@@ -397,7 +397,7 @@ uni.requestPayment({
           // 开发者业务逻辑，从服务器获取当前用户未完成的订单列表，和本地的比较
           // 此处省略
 
-          switch (transaction.transactionState) {
+          switch (transactions.transactionState) {
             case IapTransactionState.purchased:
               // 用户已付款，在此处请求开发者服务器，在服务器端请求苹果服务器验证票据
               //let result = await this.validatePaymentResult();
@@ -441,7 +441,7 @@ uni.requestPayment({
 
           // 请求苹果支付
           const transaction = await this._iap.requestPayment({
-            productId: this.productId,
+            productid: this.productId,
             // username: username + orderId //根据业务需求透传参数，关联用户和订单关系
           });