diff --git a/sop-sdk/sdk-csharp/SDKCSharp/Utility/SignUtil.cs b/sop-sdk/sdk-csharp/SDKCSharp/Utility/SignUtil.cs
index 9897a38b..47348375 100644
--- a/sop-sdk/sdk-csharp/SDKCSharp/Utility/SignUtil.cs
+++ b/sop-sdk/sdk-csharp/SDKCSharp/Utility/SignUtil.cs
@@ -1,9 +1,6 @@
 using System;
 using System.Collections;
 using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 
 namespace SDKCSharp.Utility
 {
diff --git a/sop-sdk/sdk-csharp/SDKTest/Program.cs b/sop-sdk/sdk-csharp/SDKTest/Program.cs
index 0ea00574..bf4e83c9 100644
--- a/sop-sdk/sdk-csharp/SDKTest/Program.cs
+++ b/sop-sdk/sdk-csharp/SDKTest/Program.cs
@@ -19,7 +19,7 @@ namespace SDKTest
         static string filePath = "/Users/thc/logs/priKey.txt";
 
         // 声明一个就行
-        static OpenClient client = new OpenClient(url, appId, filePath, true);
+        static OpenClient client = new OpenClient(url, appId, privateKey);
 
         public static void Main(string[] args)
         {