diff --git a/src/editor/canvas/DirectorCanvas.tsx b/src/editor/canvas/DirectorCanvas.tsx
index 96c33dc..c016483 100644
--- a/src/editor/canvas/DirectorCanvas.tsx
+++ b/src/editor/canvas/DirectorCanvas.tsx
@@ -10,7 +10,7 @@ import {
   type CSSProperties,
   type MutableRefObject,
 } from "react";
-import { Euler, Matrix4, PerspectiveCamera as ThreePerspectiveCamera, Quaternion, Spherical, Vector3 } from "three";
+import { Euler, Matrix4, MOUSE, PerspectiveCamera as ThreePerspectiveCamera, Quaternion, Spherical, Vector3 } from "three";
 import type { Object3D } from "three";
 import type { OrbitControls as OrbitControlsImpl } from "three-stdlib";
 import { clearViewportCaptureHandler, setViewportCaptureHandler } from "../io/captureBridge";
@@ -640,6 +640,40 @@ function ViewportWheelGuard({ enabled }: { enabled: boolean }) {
   return null;
 }
 
+/** 兜底：拦截画布上的浏览器右键上下文菜单（平移已改用中键，这里主要防误触右键弹系统菜单）。
+ * 以捕获阶段 + 非 passive 挂在 canvas 原生 dom 上；对右键 pointerdown 也 preventDefault，
+ * 顺手挡掉部分浏览器仍会冒出来的右键拖拽默认行为。 */
+function ViewportContextMenuGuard() {
+  const { gl } = useThree();
+
+  useEffect(() => {
+    const canvas = gl.domElement;
+    if (typeof canvas?.addEventListener !== "function") {
+      return;
+    }
+    const handleContextMenu = (event: Event) => {
+      event.preventDefault();
+    };
+    // 右键按下时先拦掉浏览器默认行为，避免 Edge 把右键拖拽识别成手势
+    const handlePointerDown = (event: PointerEvent) => {
+      if (event.button === 2) {
+        event.preventDefault();
+      }
+    };
+    // 捕获阶段、非 passive：确保先于任何浏览器默认/手势逻辑执行
+    canvas.addEventListener("contextmenu", handleContextMenu, { capture: true, passive: false });
+    canvas.addEventListener("pointerdown", handlePointerDown, { capture: true, passive: false });
+    canvas.addEventListener("dragstart", handleContextMenu, { capture: true, passive: false });
+    return () => {
+      canvas.removeEventListener("contextmenu", handleContextMenu, { capture: true });
+      canvas.removeEventListener("pointerdown", handlePointerDown, { capture: true });
+      canvas.removeEventListener("dragstart", handleContextMenu, { capture: true });
+    };
+  }, [gl]);
+
+  return null;
+}
+
 /** 把渲染三件套注册给视频导出逻辑（逐帧离线渲染用），模式仿 CanvasCaptureBridge */
 function VideoExportBridge() {
   const { camera, gl, scene } = useThree();
@@ -914,8 +948,8 @@ export function DirectorCanvas() {
       <div
         className={`director-canvas${trajectoryPlacementObjectId ? " is-placing-trajectory" : ""}`}
         data-testid="director-canvas"
-        // 屏蔽在画布上右键（右键平移）弹出的浏览器上下文菜单 / 手势：
-        // 相机视角下没有 OrbitControls 接管右键，右键拖拽会直接触发浏览器手势，这里统一拦截。
+        // 兜底：拦截画布上的浏览器右键上下文菜单（与平移无关——平移已改中键）。
+        // 相机视角下没有 OrbitControls 接管，右键仍可能弹出系统菜单，这里统一拦掉。
         onContextMenu={(event) => event.preventDefault()}
       >
         <Canvas
@@ -971,6 +1005,11 @@ export function DirectorCanvas() {
               enabled
               makeDefault
               target={DEFAULT_DIRECTOR_VIEW_SNAPSHOT.target}
+              // 按键映射：左键旋转 / 中键平移 / 滚轮推拉。
+              // 故意不把"平移"绑到右键——Edge 自 121 版起把「按住右键拖拽」作为浏览器级鼠标手势
+              // （前进/后退/切标签），页面层 preventDefault 无法拦截（微软官方确认无 JS 方案）。
+              // 平移改用中键，触摸板用户用双指拖拽即可，右键不再触发手势。
+              mouseButtons={{ LEFT: MOUSE.ROTATE, MIDDLE: MOUSE.PAN, RIGHT: undefined }}
               // 滚轮推拉距离：three 默认 1 偏慢，这里整体调快（见常量注释）
               zoomSpeed={VIEWPORT_WHEEL_ZOOM_SPEED}
               onChange={(event) => {
@@ -1024,6 +1063,7 @@ export function DirectorCanvas() {
             viewMode={viewMode}
           />
           <ViewportWheelGuard enabled={viewMode === "camera"} />
+          <ViewportContextMenuGuard />
           <PlaybackFrameDriver />
           <VideoExportBridge />
           <PlaybackTransformSync />