There are two categories of male penile dysplasia, including congenital developmental malformation and acquired dysplasia, and there are seven manifestations: first, no penis; second, double penis, also known as duplicate penis, usually accompanied by dysplasia of the bladder, penis and urethra; third, hypospadias or supraurethral cleft, which is due to the abnormal direction of the opening of the urethra and is also a manifestation of penile malformation, all of which are In the embryonic development of obstacles, so there is a congenital deformity; fourth, prepuce, it is due to the foreskin is too long, too tight, can not be separated, and the urethral opening only leave a pinpoint size gap, so that the resistance to urination and ejaculation increased, but also induced foreskin inflammation; fifth, penis short, normal Asian penis in the natural state is 6-8cm, after erection will reach 15-18cm, and this kind of Patients in the natural state is generally only 2-4cm, erection after less than 10cm, will cause daily life and sexual life disorders; sixth, the hidden penis, mostly in some obese children and patients with circumcision, the penis looks small, in fact, the root is buried in the abdominal fat, some people treat it as a prepuce, often leading to penile skin defects; seventh, the penis is too long. This is due to individual differences, these people’s penis in its natural state will reach more than 10cm, erection is often greater than 21cm, not only affects the daily life, walking and learning, but also have an impact on sexual life, most of these dysplasia need to go to a regular hospital to do the relevant examination to confirm the diagnosis. Once diagnosed, all can be repaired through surgery, the prognosis is very good.