wanglaohan You should be able to download it from the following section of the spine-godot runtime documentation:
https://zh.esotericsoftware.com/spine-godot#%E4%B8%8B%E8%BD%BD-spine-godot-%E5%BC%95%E6%93%8E%E6%A8%A1%E5%9D%97

If you are unable to download it, please let us know!

wanglaohan Thank you for showing us the screenshot! Actually, due to the dynamic linking, depending on the network connection, you may need to wait a little while for the download link to appear. After opening the spine-godot runtime documentation page, please wait for a moment.

If the download link does not appear even after waiting for a while, you can find the spine-godot build action in the Actions section of the spine-runtimes repository and download the template from there:
EsotericSoftware/spine-runtimesactions