diff --git a/docker/scripts/patch_vllm_platform.py b/docker/scripts/patch_vllm_platform.py
index 8dbeccf..d047ed0 100644
--- a/docker/scripts/patch_vllm_platform.py
+++ b/docker/scripts/patch_vllm_platform.py
@@ -29,14 +29,14 @@ def patch6_init_platform_fallback():
     f = os.path.join(VLLM_DIR, 'platforms', '__init__.py')
     lines = open(f).read().splitlines(keepends=True)
 
-    marker = "'vllm.platforms.rocm.RocmPlatform'"
+    # 兼容单/双引号两种写法（vllm 不同版本可能不同）
     return_idx = None
     for i, ln in enumerate(lines):
-        if marker in ln and 'return' in ln:
+        if 'RocmPlatform' in ln and 'return' in ln and 'is_rocm' in ln:
             return_idx = i
             break
     if return_idx is None:
-        print('Patch 6: return statement with RocmPlatform not found; skipping.')
+        print('Patch 6: RocmPlatform return statement not found; skipping.')
         return
 
     if 'torch.version.hip is not None' in ''.join(lines):
@@ -207,50 +207,27 @@ def ensure_vllm_installed():
 
 
 def install_sitecustomize_force_rocm():
-    """安装 sitecustomize.py 运行时兜底：每个 Python 进程启动时，
-    若 current_platform 落到 UnspecifiedPlatform 但 torch 检测到 ROCm/HIP，
-    则强制替换为 RocmPlatform 实例。
-
-    vllm main 的 is_rocm 检测依赖 amdsmi，ROCm 7.2 容器内 amdsmi 缺失，
-    补丁 6 的 torch.version.hip 兜底理论上已够，但子进程加载时序、
-    环境差异等可能导致检测仍失败。本 sitecustomize 作为最后一道兜底，
-    确保任何 worker 进程都能拿到 device_type='cuda' 的平台。
+    """已弃用：sitecustomize 时机问题（current_platform 是 lazy init，
+    sitecustomize 触发提前 resolve 时补丁 6 尚未应用）导致兜底无效。
+    保留空壳仅为兼容旧调用，实际不做任何事。
+    平台检测统一由补丁 6（rocm_platform_plugin torch.version.hip 兜底）解决。
     """
+    # 清理历史遗留的 sitecustomize 片段（幂等）
     site_packages = sysconfig.get_paths().get('purelib')
-    if not site_packages:
-        print('Patch 8: cannot locate site-packages; skipping sitecustomize.')
-        return
-    sc = os.path.join(site_packages, 'sitecustomize.py')
-
-    marker = '# mineru-rocm: force rocm platform'
-    existing = ''
-    if os.path.exists(sc):
-        existing = open(sc).read()
-        if marker in existing:
-            print('Patch 8: sitecustomize force-rocm already installed.')
-            return
-
-    snippet = (
-        f"\n{marker}\n"
-        "try:\n"
-        "    import torch as _t\n"
-        "    if getattr(_t.version, 'hip', None) is not None:\n"
-        "        import vllm.platforms as _vp\n"
-        "        _cp = getattr(_vp, 'current_platform', None)\n"
-        "        if _cp is not None and type(_cp).__name__ == 'UnspecifiedPlatform':\n"
-        "            from vllm.platforms.rocm import RocmPlatform as _RP\n"
-        "            _rp = _RP()\n"
-        "            # vllm main 用模块级 __setattr__ 接管 current_platform 赋值\n"
-        "            try:\n"
-        "                _vp.current_platform = _rp\n"
-        "            except Exception:\n"
-        "                _vp._current_platform = _rp\n"
-        "except Exception:\n"
-        "    pass\n"
-    )
-    with open(sc, 'a') as fp:
-        fp.write(snippet)
-    print(f'Patch 8: sitecustomize force-rocm appended to {sc}.')
+    if site_packages:
+        sc = os.path.join(site_packages, 'sitecustomize.py')
+        marker = '# mineru-rocm: force rocm platform'
+        if os.path.exists(sc) and marker in open(sc).read():
+            # 重写文件，移除我们的片段
+            c = open(sc).read()
+            # 片段从 marker 行开始到文件末尾
+            idx = c.find(marker)
+            # 回退到 marker 前的换行
+            while idx > 0 and c[idx - 1] == '\n':
+                idx -= 1
+            c = c[:idx].rstrip() + '\n'
+            open(sc, 'w').write(c)
+            print('Patch 8: removed legacy sitecustomize force-rocm snippet.')
 
 
 def main():