diff --git a/intc-modules/intc-weixin/src/main/java/com/intc/weixin/config/WxPayConfiguration.java b/intc-modules/intc-weixin/src/main/java/com/intc/weixin/config/WxPayConfiguration.java
index d709d42..4d9161c 100644
--- a/intc-modules/intc-weixin/src/main/java/com/intc/weixin/config/WxPayConfiguration.java
+++ b/intc-modules/intc-weixin/src/main/java/com/intc/weixin/config/WxPayConfiguration.java
@@ -52,7 +52,7 @@ public class WxPayConfiguration {
 
         // 私钥配置：优先使用privateContent，避免文件不存在的问题
         if (wxPayProperties.getPrivateContent() != null && !wxPayProperties.getPrivateContent().isEmpty()) {
-            payConfig.setPrivateCertContent(wxPayProperties.getPrivateContent().getBytes());
+            payConfig.setPrivateKeyContent(wxPayProperties.getPrivateContent().getBytes(java.nio.charset.StandardCharsets.UTF_8));
             log.info("使用私钥内容配置");
         } else if (wxPayProperties.getPrivateKeyPath() != null) {
             payConfig.setPrivateKeyPath(wxPayProperties.getPrivateKeyPath());