Ligation is a sterilization procedure that prevents sperm-egg binding by cutting off the passageway that carries the egg and sperm to achieve contraception. It is used for both men and women who have no further need for reproduction and can be categorized into male ligation and female ligation. Male ligation cuts off the vas deferens on both sides of the body, blocking the passage of sperm from the testicles to the penis and preventing sperm from being transported during sex, thus achieving contraception. Female ligation, on the other hand, cuts both fallopian tubes so that sperm and egg cannot meet in the fallopian tube to form a fertilized egg. Comparatively speaking, male sterilization is simpler and less harmful to the body than female sterilization. Ligation should be performed voluntarily, and it is important to think carefully before the procedure. If there is a need for fertility after ligation, tubal or vasectomy is required. However, successful pregnancy is not guaranteed after ligation, and there is a certain risk of not being able to have children.