1. Prevention of balanitis prepuce: If the prepuce is too long, it will easily lead to the deterioration of pudendal hygiene and make it difficult to clean, which will greatly increase the incidence of balanitis prepuce. However, after circumcision, the glans penis is exposed, which is easy to clean and not easy to cause glans penis infection.

2, prevention of premature ejaculation: although circumcision can not enhance sexual function, it can avoid premature ejaculation induced by too long foreskin. After circumcision, the glans penis has a chance to rub against underwear, which makes the glans penis less sensitive, so that it will not ejaculate soon in sexual life, which is helpful to prevent premature ejaculation.

3, prevention of pyelonephritis: If the foreskin is too long, it is easy to narrow the urethral orifice, limit urination, and make urine excretion poor, which will cause urine upwelling, thus inducing kidney infection, so circumcision can prevent kidney infection.

4. Prevention of female cervicitis: When men and women have sexual contact, some bacteria in the body will be brought into each other's bodies, thus inducing bacterial infection. Male foreskin is too long, hiding a lot of bacteria, which can induce female vaginitis and cervicitis in sexual life.