推荐回答（2个）
1、先考虑是不是不小心开启了专家模式，看看右下角是不是有专家模式的显示，如果有的话，只需按下 Ctrl+X键，工具栏就回来了。
2、如果上面的方法不可用，或者出现以下只出现主工具栏或者命令面板的情况。
3、如图，选择自定义-显示ui 把显示主工具栏和显示命令面板前面的勾号点上。
4、另外其他的可能性还有，自定义菜单——加载自定义界面方案——然后选择默认的UI文件即可。
在桌面上双击3dmax的快捷图标，点开3dmax这款软件，进入3dmax的操作界面，在该界面内可以看到菜单工具栏不见
在主菜单栏里找到customize菜单
击customize菜单，在其子级菜单里找到custom UI and defaults switcher 选项
点击custom UI and defaults switcher 选项，弹出其对话框
在左侧栏里可设置打开后可以带有其它功能菜单，在这里选择max选项
在右侧可以设置UI的界面，在这里选择defaultUI
设置完成以后在下面找到set选项
点击set选项，我们熟悉的操作界面就又回来了
3D Studio Max，常简称为3d Max 或3ds MAX，是Discreet公司开发的（后被Autodesk公司合并）基于PC系统的三维动画渲染和制作软件。
3D MAX广泛应用于广告、影视、工业设计、建筑设计、三维动画、多媒体制作、游戏、辅助教学以及工程可视化等领域，拥有性价比高、上手容易等优点，界面由标题栏菜单栏、工具栏、命令面板等部分组成。
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