diff --git a/weixin4j-base/src/main/java/com/foxinmy/weixin4j/payment/PayRequest.java b/weixin4j-base/src/main/java/com/foxinmy/weixin4j/payment/PayRequest.java
index 785120b9..2eb0ebbf 100644
--- a/weixin4j-base/src/main/java/com/foxinmy/weixin4j/payment/PayRequest.java
+++ b/weixin4j-base/src/main/java/com/foxinmy/weixin4j/payment/PayRequest.java
@@ -61,6 +61,14 @@ public class PayRequest extends PayBaseInfo {
 		this.prepayId = prepayId;
 	}
 
+	public String getPartnerId() {
+		return partnerId;
+	}
+
+	public void setPartnerId(String partnerId) {
+		this.partnerId = partnerId;
+	}
+
 	@Override
 	public String toString() {
 		return "package" + packageInfo + ", prepayId=" + prepayId
diff --git a/weixin4j-base/src/main/java/com/foxinmy/weixin4j/payment/mch/APPPayRequest.java b/weixin4j-base/src/main/java/com/foxinmy/weixin4j/payment/mch/APPPayRequest.java
index 0c22f553..2da86e44 100644
--- a/weixin4j-base/src/main/java/com/foxinmy/weixin4j/payment/mch/APPPayRequest.java
+++ b/weixin4j-base/src/main/java/com/foxinmy/weixin4j/payment/mch/APPPayRequest.java
@@ -35,6 +35,7 @@ public class APPPayRequest extends AbstractPayRequest {
 	public PayRequest toRequestObject() {
 		PayRequest payRequest = new PayRequest(getPaymentAccount().getId(),
 				"Sign=WXPay");
+		payRequest.setPartnerId(getPaymentAccount().getPartnerId());
 		payRequest.setPrepayId(getPrePayId());
 		return payRequest;
 	}