Cesarean scar pregnancy is a special ectopic pregnancy that seriously threatens the patient’s life and needs to be terminated promptly once diagnosed; however, because of the weakness of the muscular layer of the cesarean incision scar and the lack of contraction ability, as well as the rich and tortuous filling of the blood vessels around the scar after pregnancy, the blood sinus cannot be closed by itself once it opens, which is prone to fatal hemorrhage; there are three different forms of CSP reported in the literature, the endogenous type (type I) is the embryo sac implantation in the scar of the previous cesarean incision, but the whole grows toward the uterine cavity, with the possibility of continuing the pregnancy, but often to the middle and late stages with complications such as placental implantation and severe bleeding. Ectopic type (type II) the embryo sac is completely implanted in the scar defect and grows towards the plasma membrane, and towards the bladder and abdominal cavity, with the risk of bleeding and even uterine rupture in early pregnancy. This type is mostly formed by the continued growth of pregnancy tissue after the failure of the first two types of abortions or medical abortions, and the ultrasound images can be easily confused with trophoblastic disease, leading to misdiagnosis. . CSP is prone to fatal hemorrhage given its special anatomical site and abundant blood supply, so preoperative pretreatment is essential to ensure surgical safety, improve outcomes and reduce adverse outcomes, regardless of the surgical procedure performed. Preoperative pretreatment includes MTX, which can reduce villi activity, inhibit trophoblast proliferation, reduce local blood supply, and promote the drainage of pregnancy tissue, and uterine artery embolization (UAE), which can identify the site of bleeding and embolize bilateral uterine arteries with less trauma, rapid and precise hemostasis, and high success rate, and significantly reduce the risk of CSP bleeding. reduce the risk of hemorrhagic shock as well as hysterectomy. Currently, the treatment of CSP is not standardized, and surgical treatment options include curettage, hysteroscopic surgery and focal resection, and even hysterectomy, etc. Different treatment options are available for different types of CSP. Endogenous CSP, in which the embryo sac is implanted in the scar of the previous cesarean incision, but grows overall toward the uterine cavity, can be considered for a curettage. However, direct negative pressure aspiration is prone to uncontrollable hemorrhage and usually debridement is not used as an initial treatment option. For endogenous CSP hysteroscopic debridement after uterine artery embolization and, if necessary, laparoscopic monitored surgery is a safer, effective and reliable treatment. The majority of drug treatment for endogenous CSP has long treatment cycles and inexact results. In exogenous CSP, the gestational sac is deeply implanted in the myometrium at the caesarean incision scar and grows towards the plasma membrane or even the bladder, with localized myometrial thinning or absence and abundant surrounding blood flow. This type is not suitable for clearance or hysteroscopic surgery. Excision + repair of the lesion at the scar is the best treatment for patients with exophytic CSP. Surgical excision of the lesion at the scar can be accompanied by repair of the small diverticulum that may exist, thus reducing the recurrence of CSP The current laparoscopic surgery is minimally invasive, with a clear surgical field of view, and can effectively achieve the purpose of this surgical treatment with little trauma and fast recovery. Mass CSP is a more unique type of scar pregnancy recognized in recent years, which is characterized by extensive lesions, large masses, abundant blood flow, and blood HCG values that can be very low. The treatment modality for Cesarean scar pregnancy is closely related to the clinical type and not to the HCG value. For endogenous scar pregnancy multiple treatment modalities can be considered, each with its own advantages and disadvantages, taking into account the patient’s own needs and the conditions of the hospital, but it is recommended that treatment should be given in a hospital with emergency treatment; exogenous and mass type are aggressive scar pregnancies and clinical management should be cautious and MTX medication is not appropriate These treatments are not complete and the risk of uterine perforation and secondary surgery is significantly increased, so they cannot be used as a generalizable surgical procedure for the treatment of ectopic and mass CSP; laparoscopic excision of scar lesions after pretreatment with uterine artery embolization is a more definitive treatment for ectopic and mass CSP, which can completely excise the lesions, remove diverticula or possible microdiverticula, and repair them. The procedure is less traumatic and requires less intervention in the abdominal cavity and faster recovery, but it requires excellent laparoscopic suturing skills and is difficult to manage clinically if there are severe adhesions and anatomical derangements at the scar site, so it requires high surgical skills and senior surgeons with extensive experience. This study also confirmed that uterine artery embolization is suitable for the treatment of all types of CSP patients, and its effect is better than that of MTX treatment, which is currently the preferred and effective method for the treatment of CSP, and is considered the only method that can replace hysterectomy to control pelvic bleeding.