diff --git a/ui/package.json b/ui/package.json
index e0162770999..3799b1e0800 100644
--- a/ui/package.json
+++ b/ui/package.json
@@ -21,9 +21,11 @@
     "vite": "8.0.0"
   },
   "devDependencies": {
+    "@types/ws": "^8.18.1",
     "@vitest/browser-playwright": "4.1.0",
     "jsdom": "^28.1.0",
     "playwright": "^1.58.2",
-    "vitest": "4.1.0"
+    "vitest": "4.1.0",
+    "ws": "^8.19.0"
   }
 }
diff --git a/ui/src/ui/server/proxy.ts b/ui/src/ui/server/proxy.ts
deleted file mode 100644
index c4e47296eef..00000000000
--- a/ui/src/ui/server/proxy.ts
+++ /dev/null
@@ -1,33 +0,0 @@
-import http from "http";
-// server/proxy.ts
-import { WebSocket, WebSocketServer } from "ws";
-
-const PORT = 8081;
-const TARGET_VNC = "ws://10.75.171.0:25900"; // ← 改成你的真實 VNC 位址
-
-const server = http.createServer();
-const wss = new WebSocketServer({ server });
-
-wss.on("connection", (clientWs) => {
-  console.log("[Proxy] Client connected");
-
-  const targetWs = new WebSocket(TARGET_VNC);
-
-  targetWs.on("open", () => console.log("[Proxy] 已連線到真實 VNC"));
-
-  clientWs.on("message", (data) => targetWs.readyState === WebSocket.OPEN && targetWs.send(data));
-  targetWs.on("message", (data) => clientWs.readyState === WebSocket.OPEN && clientWs.send(data));
-
-  const cleanup = () => {
-    targetWs.close();
-    clientWs.close();
-  };
-  clientWs.on("close", cleanup);
-  targetWs.on("close", cleanup);
-  clientWs.on("error", cleanup);
-  targetWs.on("error", cleanup);
-});
-
-server.listen(PORT, () => {
-  console.log(`✅ noVNC Proxy 啟動成功 → ws://localhost:${PORT}`);
-});
diff --git a/ui/vite.config.ts b/ui/vite.config.ts
index e5a525f9ab7..7804f369740 100644
--- a/ui/vite.config.ts
+++ b/ui/vite.config.ts
@@ -1,6 +1,7 @@
 import path from "node:path";
 import { fileURLToPath } from "node:url";
 import { defineConfig } from "vite";
+import { vncProxyPlugin } from "./vnc-proxy-plugin.ts";
 
 const here = path.dirname(fileURLToPath(import.meta.url));
 
@@ -40,6 +41,7 @@ export default defineConfig(() => {
       strictPort: true,
     },
     plugins: [
+      vncProxyPlugin(),
       {
         name: "control-ui-dev-stubs",
         configureServer(server) {
diff --git a/ui/vnc-proxy-plugin.ts b/ui/vnc-proxy-plugin.ts
new file mode 100644
index 00000000000..91bcc433513
--- /dev/null
+++ b/ui/vnc-proxy-plugin.ts
@@ -0,0 +1,72 @@
+import * as net from "net";
+import type { PluginOption } from "vite";
+import { WebSocketServer, type RawData } from "ws";
+
+// Use environment variables or hardcoded defaults from the external script
+const VNC_HOST = process.env.OPENCLAW_VNC_HOST || "10.75.171.0";
+const VNC_PORT = parseInt(process.env.OPENCLAW_VNC_PORT || "25900", 10);
+const WS_PATH = "/vnc";
+
+export function vncProxyPlugin(): PluginOption {
+  return {
+    name: "openclaw-vnc-proxy",
+    configureServer(server) {
+      // Create a WebSocket server that shares the Vite HTTP server
+      const wss = new WebSocketServer({
+        noServer: true,
+        path: WS_PATH,
+        perMessageDeflate: false,
+      });
+
+      console.log(`🚀 [Proxy] VNC WebSocket proxy injected at ${WS_PATH}`);
+      console.log(`   Forwarding to: ${VNC_HOST}:${VNC_PORT}`);
+
+      wss.on("connection", (ws) => {
+        console.log(`[VNC Proxy] Client connected to ${WS_PATH}`);
+
+        const tcpSocket = net.connect(VNC_PORT, VNC_HOST);
+
+        tcpSocket.on("data", (data) => {
+          if (ws.readyState === ws.OPEN) {
+            ws.send(data);
+          }
+        });
+
+        ws.on("message", (data: RawData) => {
+          if (!tcpSocket.writable) {
+            return;
+          }
+
+          if (Buffer.isBuffer(data)) {
+            tcpSocket.write(data);
+          } else if (Array.isArray(data)) {
+            tcpSocket.write(Buffer.concat(data));
+          } else {
+            tcpSocket.write(Buffer.from(data));
+          }
+        });
+
+        ws.on("close", () => tcpSocket.end());
+        tcpSocket.on("close", () => ws.close());
+
+        tcpSocket.on("error", (e) => {
+          console.error("[VNC Proxy] TCP Error:", e.message);
+          ws.close();
+        });
+        ws.on("error", (e) => {
+          console.error("[VNC Proxy] WebSocket Error:", e.message);
+          tcpSocket.end();
+        });
+      });
+
+      // Hook into Vite's HTTP server upgrade event
+      server.httpServer?.on("upgrade", (req, socket, head) => {
+        if (req.url === WS_PATH) {
+          wss.handleUpgrade(req, socket, head, (ws) => {
+            wss.emit("connection", ws, req);
+          });
+        }
+      });
+    },
+  };
+}