Circumcision usually refers to circumcision, and the whole process includes sterilization, anesthesia, surgery, and suturing. 1. Sterilization: The skin of perineum is prepared first, and the skin of genitals and perineum is sterilized with iodophor. 2. Anesthesia: Adults usually take local infiltration anesthesia, if children can not cooperate, need to take general anesthesia. 3. Surgery: The foreskin is cut longitudinally from the dorsal side of the penis, and then the excessively long foreskin is removed in a circular motion around the penis. 4. Suture: After removing the foreskin, carry out local hemostasis, suture, and then use aseptic dressings to bandage. After the operation, keep the skin clean and hygienic, and change the incision on time to prevent infection. Circumcision need to go to a regular hospital, follow the doctor’s instructions for surgery, need to pay attention to good care after surgery, if any discomfort need to consult a doctor in a timely manner.