When doing circumcision, the precautions before, during and after the operation are different. Before the operation, you need to pay attention to keep the skin clean, cooperate with the doctor’s treatment during the operation, and take good care of the wound after the operation. 1. Preoperative: Before the operation, you need to keep the skin clean, especially the skin of the penis, scrotum and other parts of the skin, once the local skin cleaning is not in place, it may increase the risk of postoperative infection. 2. Intraoperative: During circumcision, you need to cooperate with the doctor and avoid unauthorized movement of the body, so as not to affect the operation. 3. Postoperative: After the operation, you need to take good care of the wound and avoid wetting the gauze covering the wound with urine when urinating. Once the gauze has urine, it may induce wound infection and affect the patient’s recovery speed. After circumcision need to rest in bed for 3 to 4 days of time, reduce unnecessary walking, walking too often or larger amplitude, may lead to active bleeding of the wound. After circumcision should pay attention to personal hygiene, once the wound bleeding, tearing or infection phenomenon, should be timely examination and treatment, so as not to affect the recovery of the wound.