Female sterilization surgery can be performed transabdominally, laparoscopically or vaginally. Currently, the commonly used methods are transabdominal tubal ligation and laparoscopic tubal sterilization, and transvaginal tubal surgery is basically not done anymore. Trans-abdominal tubal ligation is the most widely used sterilization method in China, with small incision, little tissue damage, simple, safe and convenient operation. Tubal ligation or laparoscopic tubal sterilization is usually performed within 3-4 days after menstruation in non-pregnant women, and within 48 hours after abortion or delivery.