Male ligation usually refers to a vasectomy, where the patient produces sperm after the vasectomy. A male undergoing a vasectomy will block sperm output, but the testes still have the ability to produce sperm after a male has just had a vasectomy. Therefore, men will produce sperm after a vasectomy, but the sperm will not be able to exit the body. After vasectomy, sperm cannot be excreted from the vas deferens, so sperm produced from the testes will mature in the epididymis, and when a certain number of sperm in the epididymis reaches a certain number, the body will produce stimulated hydrolase or protease, which is able to break down and metabolize the excess sperm. It is recommended that after experiencing multiple sexual intercourse after vasectomy, men can undergo routine semen examination, and if no sperms are found in the semen when the semen examination is performed, they can refrain from taking contraceptive measures when they have intercourse again.