diff --git a/funasr_server.py b/funasr_server.py
index 78b1863..11640b1 100644
--- a/funasr_server.py
+++ b/funasr_server.py
@@ -55,13 +55,13 @@ def get_log_path():
 @contextlib.contextmanager
 def suppress_stdout():
     """上下文管理器：临时重定向stdout到devnull，避免FunASR库的非JSON输出干扰IPC通信"""
-    old_stdout = sys.stdout
     devnull = open(os.devnull, "w")
     try:
         sys.stdout = devnull
         yield
     finally:
-        sys.stdout = old_stdout
+        # 使用 sys.__stdout__ 恢复原始stdout，避免多线程race condition
+        sys.stdout = sys.__stdout__
         devnull.close()