Ligation can be divided into female tubal ligation and male vasectomy, which are commonly used as a means of contraception and birth control in clinical practice. After ligation, pregnancy can be achieved through tubal or vasectomy and artificial assisted reproductive technology: 1. Tubal or vasectomy: surgical methods to anastomose and reopen the broken ends of both fallopian tubes or vas deferens to restore their anatomical structure and function, and after good recovery, intercourse during female ovulation can generally lead to pregnancy; 2. Artificial assisted reproductive technology: if you are unwilling to undergo surgery or have poor surgical results, you can choose artificial assisted reproductive technology. If you don’t want to have surgery or the result of surgery is not good, you can choose artificial assisted reproduction technology, but you can only choose IVF, not artificial insemination. If you choose artificial insemination, you will not be able to form a fertilized egg inside the fallopian tube because the fallopian tube is ligated. The fertilized egg can only be cultured outside of the body and grown into a gestational sac, which is then implanted into the woman’s uterine cavity to make her pregnant artificially. Therefore, for women or men who have undergone ligation, if they have the idea of getting pregnant, they can choose the above-mentioned method to get pregnant, taking into account their own situation, and to avoid the risk of ectopic pregnancy.