1.下载安装包
下载和自己平台匹配的安装包，比如笔者的python是3.8，于是从官网下载了
VTK-8.2.0-cp38-cp38-win_amd64.whl
traits-6.3.2-cp38-cp38-win_amd64.whl
mayavi-4.7.1+vtk82-cp38-cp38-win_amd64.whl
注释：cp38指的是python3.8，安装mayavi前需要安装vtk,要注意版本的对应关系
下载时，有个小技巧。在网页上ctrl+F,然后输入vtk等，查找定位到安装包的下载链接。
2.安装
把下载的安装包放入anaconda某个目录下，cd 进入该目录。依次执行下述命令：
pip install VTK-8.2.0-cp38-cp38-win_amd64.whl
pip install traits-6.3.2-cp38-cp38-win_amd64.whl
pip install mayavi-4.7.1+vtk82-cp38-cp38-win_amd64.whl
安装过程：
E:\anaconda3\Scripts>pip install VTK-8.2.0-cp38-cp38-win_amd64.whl
Processing e:\anaconda3\scripts\vtk-8.2.0-cp38-cp38-win_amd64.whl
Installing collected packages: VTK
Successfully installed VTK-8.2.0
E:\anaconda3\Scripts>pip install traits-6.3.2-cp38-cp38-win_amd64.whl
Processing e:\anaconda3\scripts\traits-6.3.2-cp38-cp38-win_amd64.whl
Installing collected packages: traits
Attempting uninstall: traits
Found existing installation: traits 6.3.1
Uninstalling traits-6.3.1:
Successfully uninstalled traits-6.3.1
Successfully installed traits-6.3.2
E:\anaconda3\Scripts>pip install mayavi-4.7.1+vtk82-cp38-cp38-win_amd64.whl
Processing e:\anaconda3\scripts\mayavi-4.7.1+vtk82-cp38-cp38-win_amd64.whl
Requirement already satisfied: apptools in e:\anaconda3\lib\site-packages (from mayavi==4.7.1+vtk82) (5.1.0)
Requirement already satisfied: numpy in e:\anaconda3\lib\site-packages (from mayavi==4.7.1+vtk82) (1.21.3)
Requirement already satisfied: envisage in e:\anaconda3\lib\site-packages (from mayavi==4.7.1+vtk82) (6.0.1)
Requirement already satisfied: pygments in e:\anaconda3\lib\site-packages (from mayavi==4.7.1+vtk82) (2.7.2)
Requirement already satisfied: vtk in e:\anaconda3\lib\site-packages (from mayavi==4.7.1+vtk82) (8.2.0)
Requirement already satisfied: traitsui>=6.0.0 in e:\anaconda3\lib\site-packages (from mayavi==4.7.1+vtk82) (7.2.1)
Requirement already satisfied: pyface>=6.1.1 in e:\anaconda3\lib\site-packages (from mayavi==4.7.1+vtk82) (7.3.0)
Requirement already satisfied: traits>=4.6.0 in e:\anaconda3\lib\site-packages (from mayavi==4.7.1+vtk82) (6.3.2)
Requirement already satisfied: configobj in e:\anaconda3\lib\site-packages (from apptools->mayavi==4.7.1+vtk82) (5.0.6)
Requirement already satisfied: setuptools in e:\anaconda3\lib\site-packages (from envisage->mayavi==4.7.1+vtk82) (50.3.1.post20201107)
Requirement already satisfied: importlib-resources>=1.1.0 in e:\anaconda3\lib\site-packages (from pyface>=6.1.1->mayavi==4.7.1+vtk82) (5.3.0)
Requirement already satisfied: importlib-metadata in e:\anaconda3\lib\site-packages (from pyface>=6.1.1->mayavi==4.7.1+vtk82) (2.0.0)
Requirement already satisfied: six in e:\anaconda3\lib\site-packages (from configobj->apptools->mayavi==4.7.1+vtk82) (1.15.0)
Requirement already satisfied: zipp>=3.1.0; python_version < "3.10" in e:\anaconda3\lib\site-packages (from importlib-resources>=1.1.0->pyface>=6.1.1->mayavi==4.7.1+vtk82) (3.4.0)
Installing collected packages: mayavi
Successfully installed mayavi-4.7.1+vtk82
如果遇到 ERROR: xxxx.whl is not a supported wheel on this platform. 请参考whl is not a supported wheel on this platform.解决办法