先天性尿道下裂是一种因前尿道发育不全而致尿道开口达不到正常位置的阴茎畸形。其开口位于正常尿道口近侧至会阴部的途径上，而阴茎腹侧的皮肤缺少，系带缺如，背侧包皮堆积如帽状。近年来尿道下裂的治疗有了革命性的变化。以往尿道下裂的手术被视为极困难手术之一，失败率较? Congenital hypospadias is a due to the development of the anterior urethra caused by urethral opening up to reach the normal position of penile deformity. The opening is located in the normal urethral approach to the perineum of the way, while the penile ventral skin is missing, lack of lace, dorsal foreskin accumulation such as cap-like. In recent years, the treatment of hypospadias has been revolutionized. Past hypospadias surgery is considered one of the most difficult surgery, the failure rate?