diff --git a/yudao-module-pay/src/main/java/cn/iocoder/yudao/module/pay/framework/pay/core/client/impl/weixin/AbstractWxPayClient.java b/yudao-module-pay/src/main/java/cn/iocoder/yudao/module/pay/framework/pay/core/client/impl/weixin/AbstractWxPayClient.java
index e050694095..4ee904bbb1 100644
--- a/yudao-module-pay/src/main/java/cn/iocoder/yudao/module/pay/framework/pay/core/client/impl/weixin/AbstractWxPayClient.java
+++ b/yudao-module-pay/src/main/java/cn/iocoder/yudao/module/pay/framework/pay/core/client/impl/weixin/AbstractWxPayClient.java
@@ -68,8 +68,11 @@ public abstract class AbstractWxPayClient extends AbstractPayClient<WxPayClientC
             payConfig.setKeyPath(FileUtils.createTempFile(Base64.decode(config.getKeyContent())).getPath());
         } else if (Objects.equals(config.getApiVersion(), API_VERSION_V3)) {
             payConfig.setPrivateKeyPath(FileUtils.createTempFile(config.getPrivateKeyContent()).getPath());
-            payConfig.setPublicKeyPath(FileUtils.createTempFile(config.getPublicKeyContent()).getPath());
-            // 特殊：强制使用微信公用模式，避免灰度期间的问题！！！
+            // 参考 https://gitee.com/yudaocode/yudao-ui-admin-vue3/issues/ICUE53 和 https://t.zsxq.com/ODR5V
+            if (StrUtil.isNotBlank(config.getPublicKeyContent())) {
+                payConfig.setPrivateCertPath(FileUtils.createTempFile(Base64.decode(config.getPublicKeyContent())).getPath());
+            }
+            // 特殊：强制使用微信公钥模式，避免灰度期间的问题！！！
             payConfig.setStrictlyNeedWechatPaySerial(true);
         }
 
diff --git a/yudao-module-pay/src/main/java/cn/iocoder/yudao/module/pay/framework/pay/core/client/impl/weixin/WxPayClientConfig.java b/yudao-module-pay/src/main/java/cn/iocoder/yudao/module/pay/framework/pay/core/client/impl/weixin/WxPayClientConfig.java
index 5aa812b6c9..6123a9d5b6 100644
--- a/yudao-module-pay/src/main/java/cn/iocoder/yudao/module/pay/framework/pay/core/client/impl/weixin/WxPayClientConfig.java
+++ b/yudao-module-pay/src/main/java/cn/iocoder/yudao/module/pay/framework/pay/core/client/impl/weixin/WxPayClientConfig.java
@@ -81,7 +81,6 @@ public class WxPayClientConfig implements PayClientConfig {
     /**
      * pub_key.pem 证书文件的对应字符串
      */
-    @NotBlank(message = "pub_key.pem 不能为空", groups = V3.class)
     private String publicKeyContent;
     @NotBlank(message = "publicKeyId 不能为空", groups = V3.class)
     private String publicKeyId;