1、If you have conda installed, you can easily install Orca from the plotly
conda channel using:

$ conda install -c plotly plotly-orca

2、conda有时候下载太慢，Alternatively, you can download the standalone Orca binaries corresponding to your operating system from the zip文件

On Windows:
Extract the windows-release.zip file.
In the release folder, double-click on orca Setup X.Y.Z, this will create an orca icon on your Desktop.
Right-click on the orca icon and select Properties from the context menu.
From the Shortcut tab, copy the directory in the Start in field.
Add this Start in directory to you system PATH (see below).
Open a new Command Prompt and verify that the orca executable is available on your PATH.

 添加到如下的环境变量：![在这里插入图片描述](https://img-blog.csdnimg.cn/2020081413321451.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDY3NjQ5OQ==,size_16,color_FFFFFF,t_70#pic_center)