Circumcision is generally used to treat phimosis and phimosis. When the foreskin covers all of the head of the penis and the opening of the urethra, even if it can still be turned up, it is still considered phimosis. Normally, by the age of 3 to 4, as the penis grows and develops, the foreskin will retract on its own, exposing the head of the penis. When circumcision is performed, the excess skin is removed and the penis reveals the glans in a soft state, which is a normal treatment result. After circumcision, you should pay attention to keep the wound clean. If you have an erection, you should protect the wound with one hand and pinch the head of the penis with one hand to make the penis return to the soft state, so as to avoid the wound from splitting open. When the wound appears to be swollen and bleeding seriously, it is recommended to go to the hospital in time.