diff --git a/deploy.py b/deploy.py
index 554ecf3..c8f4941 100644
--- a/deploy.py
+++ b/deploy.py
@@ -82,17 +82,20 @@ def log_section(msg):
 
 def run_command(cmd, cwd=None, timeout=120, capture=True):
     """执行本地命令"""
+    # 设置 PYTHONUNBUFFERED=1 确保 Python 子进程不缓冲 stdout
+    env = os.environ.copy()
+    env['PYTHONUNBUFFERED'] = '1'
     try:
         if capture:
             result = subprocess.run(
-                cmd, shell=True, cwd=cwd,
+                cmd, shell=True, cwd=cwd, env=env,
                 capture_output=True, text=True, encoding='utf-8', errors='replace',
                 timeout=timeout
             )
             return result.returncode == 0, result.stdout.strip(), result.stderr.strip()
         else:
             result = subprocess.run(
-                cmd, shell=True, cwd=cwd, timeout=timeout
+                cmd, shell=True, cwd=cwd, env=env, timeout=timeout
             )
             return result.returncode == 0, "", ""
     except subprocess.TimeoutExpired: