Under normal circumstances, circumcision does not have sequelae, but in the case of improper operation or poor postoperative prognosis, sequelae such as penile injury, circumcision, circumcision scarring and so on may occur. 1. Penile injury: Improper operation during surgery can lead to penile injury and bleeding, which in turn affects penile function. 2. Short foreskin: During the operation, too much foreskin is removed, which will lead to short foreskin after the operation, and then there may be tugging pain during erection. 3. Circumcision scarring: poor healing of the incision after surgery may result in scarring at the circumcision site, which affects the aesthetic appearance and may even cause painful sexual intercourse. If you want to undergo circumcision, please choose a regular hospital, after the operation of the above symptoms, should be taken seriously, timely to the urology department, and by the guidance of a specialist doctor for treatment.