Men generally no longer discharge sperm after ligation. Ligation surgery can effectively tie up the vas deferens so that newly produced sperm from the testes cannot be discharged from the body. Men who have just had ligation surgery may still have viable sperm in the first few discharges of semen. One month after surgery, patients should go to the urology department or male department of their local hospital for a routine semen examination to check for the presence of sperm in the semen to ascertain the effectiveness of ligation. Therefore, other contraceptive measures should be taken when the ligation surgery has just been done. 2 to 3 months later, the newly produced spermatozoa in the testes can no longer be realized to be discharged out of the body through the vas deferens, and the purpose of contraception is achieved at that time. Men should pay attention to the healing of the incision after the ligation and regularly disinfect the incision with iodophor cotton balls to avoid inflammation and infection. Although the vas deferens is ligated, a small amount of semen still remains in the seminal vesicles after the ligation. Patients should practise contraception or abstinence for 1 month after the ligation to avoid unwanted pregnancy. After the surgery, patients should take a light and balanced diet, eat more high protein and nutritious food, and do not eat cold, hard, spicy and other stimulating food. Pay attention to keep warm, avoid getting cold and damp, keep your mood happy, ensure enough sleep, and consult a doctor as soon as possible if you feel unwell.