diff --git a/index.html b/index.html
index e8cf0813..81bc8248 100644
--- a/index.html
+++ b/index.html
@@ -1,4 +1,4 @@
-<!DOCTYPE html>
+﻿<!DOCTYPE html>
 <html lang="en">
   <head>
     <meta charset="UTF-8" />
@@ -147,6 +147,31 @@
         </div>
       </div>
     </div>
+    <!-- Edge 兼容：hiprint socket.io 连接添加 polling 降级策略，防止 WebSocket-only 连接在 Edge 下失败 -->
+    <script>
+      (function() {
+        var _io = window.io;
+        Object.defineProperty(window, 'io', {
+          configurable: true,
+          enumerable: true,
+          get: function() { return _io; },
+          set: function(fn) {
+            if (typeof fn === 'function' && fn !== _io && !fn.__hiprintPatched) {
+              var _orig = fn;
+              _io = function(url, opts) {
+                opts = Object.assign({}, opts || {});
+                opts.transports = ['websocket', 'polling'];
+                return _orig(url, opts);
+              };
+              _io.__hiprintPatched = true;
+            } else {
+              _io = fn;
+            }
+          }
+        });
+      })();
+    </script>
     <script type="module" src="/src/main.ts"></script>
   </body>
 </html>
+
