diff --git a/hjha-console/Program.cs b/hjha-console/Program.cs
index 07326640..03c7a0cd 100644
--- a/hjha-console/Program.cs
+++ b/hjha-console/Program.cs
@@ -62,12 +62,11 @@ namespace hjha_console
                     // 重定向 Console stdout → 本轮 ISMCTS 日志
                     var ismctsLog = $"{logDir}/round_{r:D5}_ismcts.txt";
                     var oldOut = Console.Out;
-                    using (var ismctsWriter = new StreamWriter(ismctsLog) { AutoFlush = true })
-                    {
-                        Console.SetOut(ismctsWriter);
-                        main.Test("");
-                    }
-                    Console.SetOut(oldOut);
+                    var ismctsWriter = new StreamWriter(ismctsLog) { AutoFlush = true };
+                    Console.SetOut(ismctsWriter);
+                    main.Test("");
+                    Console.SetOut(oldOut);  // 先恢复再Close (macOS兼容)
+                    ismctsWriter.Close();
 
                     // 合并 output.txt + ISMCTS 日志 → 本轮日志
                     using (var combined = new StreamWriter(logPath, false))