diff --git a/inbound_verify/runtime.py b/inbound_verify/runtime.py
index e69b70d..6081d09 100644
--- a/inbound_verify/runtime.py
+++ b/inbound_verify/runtime.py
@@ -301,6 +301,15 @@ def launch_and_prepare(debug_mode=False, debug_target="", foreground=True):
     _launch_args = ["--remote-debugging-port=9223"] if debug_mode else []
     browser = pw.chromium.launch(headless=False, args=_launch_args)
     context = browser.new_context(viewport={"width": 1920, "height": 1080})
+    # 默认禁用麦克风/摄像头：在每个页面/iframe 加载前覆盖 getUserMedia 为“直接拒绝”，
+    # 这样站点（如韵达登录/工作台会请求麦克风）调用时立即 NotAllowedError，Chromium 不再
+    # 弹出系统授权窗，且麦克风被真正挡住（不是授权给它）。物流工作台无需音视频采集。
+    context.add_init_script(
+        "(()=>{const d=()=>Promise.reject(new DOMException('Permission disabled','NotAllowedError'));"
+        "if(navigator.mediaDevices)navigator.mediaDevices.getUserMedia=d;"
+        "for(const k of ['getUserMedia','webkitGetUserMedia','mozGetUserMedia']){"
+        "if(typeof navigator[k]==='function')navigator[k]=function(){return d();};}})();"
+    )
 
     pages_map = {}
     print("\n====================================================")