diff --git a/pay-java-common/src/main/java/com/egzosn/pay/common/api/BasePayConfigStorage.java b/pay-java-common/src/main/java/com/egzosn/pay/common/api/BasePayConfigStorage.java
index b559fd5732ed5b4daeab3890fe9f4bbda394af4b..9b85072e23c633d1641b813bc5a3b9a576ca9478 100644
--- a/pay-java-common/src/main/java/com/egzosn/pay/common/api/BasePayConfigStorage.java
+++ b/pay-java-common/src/main/java/com/egzosn/pay/common/api/BasePayConfigStorage.java
@@ -22,6 +22,10 @@ public abstract class BasePayConfigStorage implements PayConfigStorage {
      */
     private String keyPrivate;
 
+    /**
+     * 支付平台公钥Id(签名校验使用)
+     */
+    private String keyPublicId;
     /**
      * 支付平台公钥(签名校验使用)
      */
@@ -95,6 +99,14 @@ public abstract class BasePayConfigStorage implements PayConfigStorage {
         this.keyPrivate = keyPrivate;
     }
 
+    @Override
+    public String getKeyPublicId() {
+        return keyPublicId;
+    }
+
+    public void setKeyPublicId(String keyPublicId) {
+        this.keyPublicId = keyPublicId;
+    }
 
     @Override
     public String getKeyPublic() {
diff --git a/pay-java-common/src/main/java/com/egzosn/pay/common/api/PayConfigStorage.java b/pay-java-common/src/main/java/com/egzosn/pay/common/api/PayConfigStorage.java
index b6bc6000251bb466d1612b779622ded767d5efe6..e207511fc0f2424cc8d4dfb026014216f5fef294 100644
--- a/pay-java-common/src/main/java/com/egzosn/pay/common/api/PayConfigStorage.java
+++ b/pay-java-common/src/main/java/com/egzosn/pay/common/api/PayConfigStorage.java
@@ -88,6 +88,13 @@ public interface PayConfigStorage extends Attrs {
      */
     String getInputCharset();
 
+    /**
+     * 支付平台公钥ID(签名校验使用)
+     *
+     * @return 公钥
+     */
+    String getKeyPublicId();
+
     /**
      * 支付平台公钥(签名校验使用)
      *
diff --git a/pay-java-demo/src/main/java/com/egzosn/pay/demo/controller/WxV3PayController.java b/pay-java-demo/src/main/java/com/egzosn/pay/demo/controller/WxV3PayController.java
index c23bf417f98cd5b58f1d3c5918eb62c5e5266ac3..d538309a28d3d338e0e95a7be9125d05f8be135d 100644
--- a/pay-java-demo/src/main/java/com/egzosn/pay/demo/controller/WxV3PayController.java
+++ b/pay-java-demo/src/main/java/com/egzosn/pay/demo/controller/WxV3PayController.java
@@ -58,6 +58,7 @@ public class WxV3PayController {
         wxPayConfigStorage.setV3ApiKey("9bd8f0e7af4841299d782406b7774f57");
         //验签、转账等接口使用，9月份开始不允许获取证书方式了，直接通过公钥字符来做，
         wxPayConfigStorage.setKeyPublic("支付平台公钥(原为自动获取的证书)");
+        wxPayConfigStorage.setKeyPublicId("支付平台公钥ID");
         wxPayConfigStorage.setNotifyUrl("http://sailinmu.iok.la/wxV3/payBack.json");
         wxPayConfigStorage.setReturnUrl("http://sailinmu.iok.la/wxV3/payBack.json");
         wxPayConfigStorage.setInputCharset("utf-8");
diff --git a/pay-java-wx/src/main/java/com/egzosn/pay/wx/v3/api/WxPayService.java b/pay-java-wx/src/main/java/com/egzosn/pay/wx/v3/api/WxPayService.java
index 9984e6283ef21165473af5fb77e2026221898a62..a932b339e709b22425b26a73cbb3c27c79924919 100644
--- a/pay-java-wx/src/main/java/com/egzosn/pay/wx/v3/api/WxPayService.java
+++ b/pay-java-wx/src/main/java/com/egzosn/pay/wx/v3/api/WxPayService.java
@@ -350,7 +350,13 @@ public class WxPayService extends BasePayService<WxPayConfigStorage> implements
      */
     @Override
     public HttpStringEntity hookHttpEntity(HttpStringEntity entity) {
-        entity.addHeader(new BasicHeader(WxConst.WECHATPAY_SERIAL, payConfigStorage.getCertEnvironment().getPlatformSerialNumber()));
+        if (StringUtils.isNotEmpty(payConfigStorage.getKeyPublic())) {
+            // 商户上送敏感信息时使用`微信支付平台公钥`加密
+            entity.addHeader(new BasicHeader(WxConst.WECHATPAY_SERIAL, payConfigStorage.getKeyPublicId()));
+        }
+        else{
+            entity.addHeader(new BasicHeader(WxConst.WECHATPAY_SERIAL, payConfigStorage.getCertEnvironment().getPlatformSerialNumber()));
+        }
         return entity;
     }