Theoretically speaking, male vasectomy includes ligation, sticking and blocking, but all of them only involve vas deferens, not testis, an organ that maintains male function. So it can be said that vasectomy will not affect sexual function.

From a practical point of view, most people's sexual function has not changed compared with that before operation, and some people are relaxed because of the worry of unexpected pregnancy, but their sexual function has been enhanced. However, some people, especially those who lack the knowledge of vasectomy before operation, have decreased libido, impotence, nocturnal emission and premature ejaculation.