In hospitals where surgeons are tired, the anesthesiology department may not be much easier, and there are many different professions. If you are already working, it is not impossible to change careers, but you will have to go through at least a few years of study, provided that The anesthesiology department of your current hospital is willing to accept you and retrain you. Or you can choose to take the postgraduate entrance examination (including the Ph.D. examination) to study anesthesiology, which will help you get started faster.