diff --git a/backend/mpc-system/services/service-party-app/electron/main.ts b/backend/mpc-system/services/service-party-app/electron/main.ts
index 7cbdd9d1..4b1a7918 100644
--- a/backend/mpc-system/services/service-party-app/electron/main.ts
+++ b/backend/mpc-system/services/service-party-app/electron/main.ts
@@ -223,9 +223,8 @@ function setupIpcHandlers() {
   // gRPC - 测试连接
   ipcMain.handle('grpc:testConnection', async (_event, { url }) => {
     try {
-      // 解析 URL
-      const urlObj = new URL(url);
-      await grpcClient?.connect(urlObj.hostname, parseInt(urlObj.port) || 50051);
+      // 地址格式: host:port (例如 mpc-grpc.szaiai.com:443)
+      await grpcClient?.connect(url);
       return { success: true };
     } catch (error) {
       return { success: false, error: (error as Error).message };