Tubal pregnancy refers to the development of a pregnant egg in the fallopian tube, which can also be called ectopic pregnancy. It occurs most often in the tubal abdomen, accounting for 50%-90%, followed by isthmus pregnancy accounting for 20%, and can cause acute intra-abdominal hemorrhage after miscarriage or rupture. The common cause of tubal pregnancy is tubal inflammation, which can lead to tubal dysplasia and reduced peristalsis, thus affecting the normal operation of the pregnant egg. In addition, the peristaltic function of the fallopian tube is regulated by the ovarian hormones and the nervous system. In other words, every woman of childbearing age has the possibility of tubal pregnancy due to various disturbances, and it is impossible for a patient with tubal obstruction to get pregnant before treatment, and when the tubes are patent after treatment, there is the possibility of ectopic pregnancy, and the chance of its occurrence should be theoretically higher due to the influence of chronic inflammation in the fallopian tubes, but from the cases we have come across nearly 1500 cases were recanalized, more than 570 cases However, from the nearly 1,500 cases that we have dealt with, more than 570 cases have been recanalized, with normal pregnancies and 2 tubal pregnancies, indicating that the incidence of ectopic pregnancy after intervention is very low. Treatment of tubal pregnancy: The traditional treatment is intramuscular injection of methotrexate when the gestational sac is small without rupture and the blood HCG is low, or surgical treatment when the gestational sac is large and ruptured, such as open or laparoscopic salpingo-oophorectomy, or incision of the fallopian tube to remove the pregnant egg and then anastomosis of the fallopian tube. Interventional treatment of tubal pregnancy is a new conservative treatment method developed in recent years, which is safe, effective, with few side effects and can preserve the fallopian tubes and thus fertility. Currently, there are two types of interventional treatment, one is vascular interventional treatment and the other is non-vascular interventional treatment. The indications for tubal pregnancy intervention are: the tubal pregnancy has not ruptured, the vital weight is stable, the mixed adnexal mass is less than or equal to 5CM by ultrasonography, and the blood B-HCG is <20,000 Iμ/L. Vascular intervention is suitable for patients with more than 8 weeks of gestation, while non-blood intervention is suitable for patients within 8 weeks of gestation. Therefore, the catheter is inserted directly into the ipsilateral uterine artery to instill embryocidal drugs, which can make the drugs reach the tubal branches rapidly and produce the first-pass effect to kill the embryo rapidly. Temporary embolization of the uterine artery after infusion of embryocidal drugs can cause ischemia and necrosis of the gestational sac and prevent rupture and bleeding of the gestational sac to achieve good therapeutic effect. Non-vascular: The catheter is inserted into the fallopian tube through the cervix, and the guide wire is directly punctured into the gestational sac to inject the drug. Due to the mechanical effect of hydraulic pressure, the drug can effectively penetrate between the wall of the fallopian tube and the trophoblast layer, promoting the stripping of the trophoblast layer, causing cell necrosis and embryo death. 3.Efficacy: clinical symptoms disappeared after the operation blood B-HCG dropped to normal and pelvic mass shrunk or disappeared.