Ectopic pregnancy is defined as the implantation of a fertilized egg in a region outside the uterine cavity, commonly known as tubal pregnancy (more than 95% of cases). Theoretically, patients with ectopic pregnancy have a chance to conceive with normal ovulation after the return of menstruation, but the chance of conception is reduced (in cases of radical ectopic pregnancy with removal of one of the fallopian tubes); the risk of a second ectopic pregnancy increases (in cases of ectopic pregnancy treated with medication, or ectopic pregnancy treated with conservative surgery with tubal opening for embryo retrieval). When one of the fallopian tubes is removed, as long as the function and morphology of the opposite fallopian tube are normal and there are no abnormalities in the ovary and uterine cavity, theoretically, the patient can conceive and have a healthy baby, but the chance of pregnancy is relatively lower than that of women with bilateral fallopian tubes and the preparation time is relatively longer. If the function or morphology of the opposite fallopian tube is abnormal, such as fluid in the fallopian tube, pelvic inflammatory disease or Mycobacterium tuberculosis infection, which causes adhesions and narrowing in the tube, or torsion of adhesions outside the tube, resulting in the egg not meeting the sperm, or the fertilized egg not moving normally to the uterine cavity for implantation, then after removal of one fallopian tube, if the condition of the opposite fallopian tube is not improved, the patient will be largely unable to have a baby, or the chance of another ectopic pregnancy increases significantly. The chances of having another ectopic pregnancy increase significantly. At present, the chance of fertility can be greatly increased by improving the condition of the fallopian tubes through relevant medical techniques, such as laparoscopic tubal adhesion separation, shaping and recanalization, which is what we call minimally invasive, with small surgical incisions, fast recovery, good treatment results and relatively economical costs. For some patients who have one fallopian tube removed for ectopic pregnancy and the opposite fallopian tube is normal, but the ovary does not ovulate or ovulates little, such as polycystic ovary syndrome; or the uterine cavity is abnormal, such as the endometrium is too thin causing the fertilized egg not to be easy to bed, or early miscarriage, the treatment effect can be achieved by regulating the hormone level in the body through medication. If none of the above is successful, we can use assisted reproduction techniques such as IVF-ET (in vitro fertilization), which is now relatively mature in clinical practice, has a wider audience, and the cost is much lower than in the past.