Circumcision can be done at the age of 6-7 years old, or of course you can go for this surgery before the penis develops. The main purpose of having a circumcision is to cut off the overgrown foreskin to be able to expose the glans. The benefits of doing this are mainly the following: 1) it can expose the glans, which can facilitate cleaning and will not cause repeated inflammatory infections; 2) circumcision can expose the glans and can receive external stimulation, which will not affect the development of the penis; 3) circumcision can reduce the incidence of penile cancer. Therefore, if a patient has prepuce, it is recommended to choose surgery in hospital in time.