After circumcision, the duration of sexual life may be prolonged. The main mechanism is that after circumcision, the glans is completely exposed to the outside of the foreskin, and the glans is rubbed by the underwear for a long time, which can cause the sensitivity of the surface to gradually decrease. The regular process of friction, the skin on the surface of the glans gradually keratinized changes, it can appear to have a decrease in sensitivity, which can then achieve the purpose of properly prolonging sexual life. But not all patients may extend the time of sexual life, for example, for patients with primary premature ejaculation, there is a relatively low sensitivity of the nerve threshold, at this time even if circumcision, can not achieve the purpose of extending the time. So the effect of prolonging time varies from person to person and from condition to condition. But the majority of patients, after circumcision may have appropriate extension, and the earlier circumcision is done, the better the effect of extension. The main purpose of circumcision is to reduce the probability of local foreskin infection and glans infection, but not to extend the circumcision for the purpose of doing it.