Male genital curvature is divided into physiological and pathological. 1. Physiological curvature: the male genitals have a pair of penile corpus cavernosum, but the left and right sides of the corpus cavernosum in the development, not necessarily grow as fast, even if it is the same side of the corpus cavernosum, but also not necessarily on the upper, lower, left, right development are identical, so it will produce spongy body length of the different sizes of the situation, which will lead to the curvature of the genitals. 2. Pathological curvature: there are various reasons, abnormal development of urethral spongiosum or lack of urethral spongiosum; short foreskin tie or uneven development of genital skin; genital spongiosum sclerosis; abnormal development of genital leucoderma; genital injuries and rupture of leucoderma caused by genital curvature and so on. In addition, bad lifestyle habits may also cause problems, such as wearing tight underwear that permanently skews the genitals to one side. It is recommended to consult a doctor to determine the cause of the curvature of the penis and to follow the doctor’s instructions.