diff --git a/payment-spring-boot-autoconfigure/src/main/java/cn/felord/payment/wechat/v3/ecommerce/ApplymentApi.java b/payment-spring-boot-autoconfigure/src/main/java/cn/felord/payment/wechat/v3/ecommerce/ApplymentApi.java
index 2b46e31..5c03e0f 100644
--- a/payment-spring-boot-autoconfigure/src/main/java/cn/felord/payment/wechat/v3/ecommerce/ApplymentApi.java
+++ b/payment-spring-boot-autoconfigure/src/main/java/cn/felord/payment/wechat/v3/ecommerce/ApplymentApi.java
@@ -178,6 +178,7 @@ public class ApplymentApi extends AbstractApi {
         EcommerceContactInfo contactInfo = applymentParams.getContactInfo();
         contactInfo.setContactName(signatureProvider.encryptRequestMessage(contactInfo.getContactName(), x509Certificate));
         contactInfo.setContactIdCardNumber(signatureProvider.encryptRequestMessage(contactInfo.getContactIdCardNumber(), x509Certificate));
+        contactInfo.setMobilePhone(signatureProvider.encryptRequestMessage(contactInfo.getMobilePhone(), x509Certificate));
         String contactEmail = contactInfo.getContactEmail();
         if (contactEmail != null) {
             contactInfo.setContactEmail(signatureProvider.encryptRequestMessage(contactEmail, x509Certificate));