However, it is a sterilization procedure and may cause pain during the surgery. If there is no need to have children, bilateral tubal ligation is also possible, because there is no need to worry about unwanted pregnancy after the ligation, because the success rate of contraception after bilateral tubal ligation can reach 99.9%, so basically there is no pregnancy. However, if you want to have children again after this surgery, you have to have bilateral tubal anastomosis, and the success rate of pregnancy after bilateral tubal anastomosis can only reach about 70%.