diff --git a/internal/shared/payment/wechatpay.go b/internal/shared/payment/wechatpay.go
index d4d8afe..549955b 100644
--- a/internal/shared/payment/wechatpay.go
+++ b/internal/shared/payment/wechatpay.go
@@ -213,11 +213,10 @@ func newWechatPayServiceWithWxPayPubKey(c config.Config, logger *zap.Logger) *We
 		panic(fmt.Sprintf("初始化失败，服务停止: %v", err))
 	}
 
-	// 初始化 notify.Handler
-	certificateVisitor := downloader.MgrInstance().GetCertificateVisitor(mchID)
+	// 初始化 notify.Handler（纯支付公钥验签）
 	notifyHandler := notify.NewNotifyHandler(
 		mchAPIv3Key,
-		verifiers.NewSHA256WithRSACombinedVerifier(certificateVisitor, mchPublicKeyID, *mchPublicKey))
+		verifiers.NewSHA256WithRSAPubkeyVerifier(mchPublicKeyID, *mchPublicKey))
 
 	logger.Info("微信支付客户端初始化成功(微信支付公钥方式)")
 	return &WechatPayService{