After adjusting the size, the person will become larger，How to deal with？
I think you need to rephrase this. It’s not enough info to describe the actual problem.
If you don’t speak English you can attempt to post in localized area.
Think he means he resized a dino and now the player scales with dino size in which case he needs to resize the rider socket on the skeleton.
This video will show you how to do it https://www.youtube.com/watch?v=YdRm_eOdxrU&t=470s