When the embryo implants in the lower part of the previous uterus, the cesarean incision scar, it is called a pregnancy in the lower uterine cesarean incision scar, or incisional pregnancy. The pathogenesis of incisional scar pregnancy is still unclear and may be related to the lack of interstitial metaplasia of the endometrium due to excessive egg run-off and cesarean delivery; fertilized egg implantation with underlying metaplastic defects; direct invasion of trophoblast into the myometrium and continuous growth, adhesion of the villi to the myometrium, implantation or even penetration of the uterine wall. It is widely believed that the cause of this disease is endometrial damage caused by various surgical operations, such as curettage, cesarean section, myomectomy, hysteroplasty, hysteroscopy and even manual placenta extraction. There is no specificity in the clinical presentation of this disease. Patients have a history of cesarean delivery, a history of menopause, enlarged uterine body, elevated blood HCG and other normal early pregnancy manifestations. Ultrasound is a reliable method to diagnose this disease. Pregnancy in the uterine scar site has more specific imaging manifestations, and the sonogram is characterized by low position of intrauterine gestational sac or placental tissue, located in the lower uterine incisional scar, without demarcation with the incisional muscle layer, rich blood flow between the gestational sac and the incision, moderate echogenicity in the anterior wall of the lower uterine segment, uneven echogenicity, blood flow seen up to the plasma membrane, gestational sac implantation in the lower anterior wall incision, and no abnormalities in the cervix. Uterine incision scar pregnancy is a very rare type of ectopic pregnancy. However, it is difficult to diagnose early in pregnancy and is easily misdiagnosed as pre-eclampsia and incomplete miscarriage. Once the pregnancy continues or is misdiagnosed, pedestrian scraping can lead to uncontrollable hemorrhage and even uterine rupture, making it a very dangerous type of ectopic pregnancy. Therefore, once diagnosed, pregnancy should be interrupted promptly. In recent years, with the increase in the rate of cesarean delivery, the incidence of incisional pregnancies has also tended to increase. There is an urgent need to find a safe and effective treatment method. Uterine artery chemoembolization is fast, safe, clearly shows the bleeding vessel, and accurately performs embolization, so it can be the treatment of choice for incisional pregnancy. Therefore, we advocate that once an incisional pregnancy is diagnosed, uterine artery chemoembolization should be performed first, followed by negative pressure abortion within one week. Interventional techniques for hysterotomy scar pregnancy have the advantages of safety, low complications, rapid hemostasis, fast recovery and minimal invasiveness, preserving the integrity of the uterus as well as its reproductive function. Uterine artery embolization should be preferred for the treatment of hysterotomy scar pregnancy in hospitals that have the conditions.