diff --git a/payment-spring-boot-autoconfigure/src/main/java/cn/felord/payment/wechat/v3/WechatPayClient.java b/payment-spring-boot-autoconfigure/src/main/java/cn/felord/payment/wechat/v3/WechatPayClient.java
index 515b3e1..8c76203 100644
--- a/payment-spring-boot-autoconfigure/src/main/java/cn/felord/payment/wechat/v3/WechatPayClient.java
+++ b/payment-spring-boot-autoconfigure/src/main/java/cn/felord/payment/wechat/v3/WechatPayClient.java
@@ -226,7 +226,8 @@ public class WechatPayClient {
             httpHeaders.setAccept(Collections.singletonList(MediaType.APPLICATION_JSON));
             // for upload
             if (Objects.isNull(httpHeaders.getContentType())) {
-                httpHeaders.setContentType(MediaType.APPLICATION_JSON);
+                // 避免出现因为中文导致的 HttpRetryException
+                httpHeaders.setContentType(MediaType.parseMediaType("application/json;charset=UTF-8"));
             }
             httpHeaders.add("Authorization", authorization);
             httpHeaders.add("User-Agent", "X-Pay-Service");