What kind of technical level does the wedding photo studio need, such as ps level, and what else do you need?

The post-production work of the studio is mainly: screen adjustment, matting, overprinting and so on. As long as you are proficient in PS, you'd better learn some post-production software of film and television editing, such as audio and video or premiere, which is used when making electronic photo albums or video titles, and is also useful for learning 3D animation software. After all, some photo studios not only do wedding photography, but sometimes they also have photography services.

Of course, several filters commonly used to process photos with PS should also be used, such as Neat Image/topaz/Nik software.