Cats that are not vaccinated and sterilized generally will not die, but there is a certain risk of contracting diseases, because cats will be weaker after sterilization surgery and their resistance will be reduced. If there are many viruses in the hospital, they will be easily infected. Therefore, if the cat has not been vaccinated, it is best not to take the cat for sterilization. If you want to be sterilized, it is best to get the vaccine in advance. After the vaccination, you should take the cat for sterilization one week later. Before sterilization, it is best to give the cat a physical examination to confirm its health. Do sterilization surgery if you are not allergic to anesthetics.