diff --git a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/unipay/param/MerchantPaymentCommonParam.java b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/unipay/param/MerchantPaymentCommonParam.java
index adf3cb240..03a140a7f 100644
--- a/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/unipay/param/MerchantPaymentCommonParam.java
+++ b/daxpay-payment/daxpay-payment-common/src/main/java/cn/daxpay/open/payment/unipay/param/MerchantPaymentCommonParam.java
@@ -24,4 +24,9 @@ public abstract class MerchantPaymentCommonParam extends PaymentCommonParam{
     @Size(max = 32, message = "{validation.field.appId.size}")
     private String appId;
 
+    /// 通道商户号(可选, 调试或指定通道商户时传入)
+    @Schema(description = "通道商户号")
+    @Size(max = 32, message = "{validation.field.channelMchNo.size}")
+    private String channelMchNo;
+
 }
diff --git a/daxpay-platform/daxpay-platform-common/common-i18n/src/main/resources/i18n/en-US/validation.json b/daxpay-platform/daxpay-platform-common/common-i18n/src/main/resources/i18n/en-US/validation.json
index d90bb8b7c..956beea02 100644
--- a/daxpay-platform/daxpay-platform-common/common-i18n/src/main/resources/i18n/en-US/validation.json
+++ b/daxpay-platform/daxpay-platform-common/common-i18n/src/main/resources/i18n/en-US/validation.json
@@ -74,6 +74,9 @@
       "size": "Merchant app ID cannot exceed 32 characters",
       "notNull": "Application ID cannot be null"
     },
+    "channelMchNo": {
+      "size": "Channel merchant no. cannot exceed 32 characters"
+    },
     "subMchId": {
       "notBlank": "WeChat sub-merchant ID cannot be blank"
     },
diff --git a/daxpay-platform/daxpay-platform-common/common-i18n/src/main/resources/i18n/zh-CN/validation.json b/daxpay-platform/daxpay-platform-common/common-i18n/src/main/resources/i18n/zh-CN/validation.json
index 7a9107f41..e83cc81b4 100644
--- a/daxpay-platform/daxpay-platform-common/common-i18n/src/main/resources/i18n/zh-CN/validation.json
+++ b/daxpay-platform/daxpay-platform-common/common-i18n/src/main/resources/i18n/zh-CN/validation.json
@@ -74,6 +74,9 @@
       "size": "应用号不可超过32位",
       "notNull": "应用ID不可为空"
     },
+    "channelMchNo": {
+      "size": "通道商户号不可超过32位"
+    },
     "subMchId": {
       "notBlank": "微信子商户号不可为空"
     },