diff --git a/McpStudy.McpServerStdio/Program.cs b/McpStudy.McpServerStdio/Program.cs
index cfeea38..9ccee04 100644
--- a/McpStudy.McpServerStdio/Program.cs
+++ b/McpStudy.McpServerStdio/Program.cs
@@ -26,7 +26,6 @@ namespace McpStudy.McpServerStdio
                     .WithToolsFromAssembly();
 
                 await builder.Build().RunAsync();
-
             }
             catch (Exception e)
             {
@@ -47,8 +46,6 @@ public static class TimeTool
     public static string GetCurrentTime(string city)
     { 
         var message = $"It is {DateTime.Now.Hour}:{DateTime.Now.Minute} in {city}.";
-
-        File.AppendAllText("Mcplog.txt", $"{message}{System.Environment.NewLine}");
         return  message;
     }
        
diff --git a/McpStudy.UnitTest/UnitTest1.cs b/McpStudy.UnitTest/UnitTest1.cs
deleted file mode 100644
index 5bfdb96..0000000
--- a/McpStudy.UnitTest/UnitTest1.cs
+++ /dev/null
@@ -1,11 +0,0 @@
-namespace McpStudy.UnitTest
-{
-    public class UnitTest1
-    {
-        [Fact]
-        public void Test1()
-        {
-
-        }
-    }
-}
diff --git a/McpStudy.UnitTest/UseXunitTest.cs b/McpStudy.UnitTest/UseXunitTest.cs
new file mode 100644
index 0000000..d961124
--- /dev/null
+++ b/McpStudy.UnitTest/UseXunitTest.cs
@@ -0,0 +1,21 @@
+using Xunit.Abstractions;
+
+namespace McpStudy.UnitTest
+{
+    public class UseXunitTest
+    {
+        private readonly ITestOutputHelper _testOutput;
+        public UseXunitTest(ITestOutputHelper testOutputHelper)
+        { 
+            _testOutput = testOutputHelper;
+        }
+
+        [Fact]
+        public void Use_xUnit_Test()
+        {
+            var msg = "使用xUnit单元测试框架";
+
+            Assert.True(true, msg);
+        }
+    }
+}