The problem of too short circumcision is more common, mainly manifested as pain during erection, driving the scrotum upward after erection, a sense of obstruction during sexual intercourse, and short erection time. Therefore, for short circumcision, first of all, preventive measures should be taken, as far as possible in the operation, do not remove too long foreskin. Preventive methods for the premise of fully pulling the penis, the estimated amount of excision of the foreskin, expected to be enough after the excision of the foreskin, the residual amount should also be 1-2 centimeters of the degree of scratches, so that surgical excision is more secure.