Objective To analyze retrospectively the utility of uterine arterial embolization(UAE) for cesarean scar pregnancy(CSP).Methods Fifty-one women with CSP were pretreated with UAE before dilatation & curettage(D&C).Indexes such as blood loss volume,operation-associated complications,serum hCG level,ultrasound imaging and hospitalization cost were analyzed.Results Thirty-eight women accepted D&C following UAE(group A),10 patients had medicine(3 took trichosanthin injection,7 took MTX injection) before UAE and D&C(group B).Uterine packing following emergency UAE were performed in another 3 women due to severe hemorrhage during direct curettage without pretreatment(group C).There were no statistically significant differences between group A and group B about the serum β-hCG level resolution time and the blood loss in the opertation.Patients had shorter duration of hospital stay(P<0.01) and cheaper cost of hospitalization(P<0.05) of group A than group B.Conclusion Pretreatment with UAE before curettage is safe and effective in terminating CSP,reducing hospitalization cost.UAE followed by curettage is recommended to medical facilities where UAE is available. Objective To analyze retrospectively the utility of uterine arterial embolization (UAE) for cesarean scar pregnancy (CSP). Methods Fifty-one women with CSP were pretreated with UAE before dilatation & curetage (D & C). Indexes such as blood loss volume, operation-associated complications, serum hCG level, ultrasound imaging and hospitalization costs were analyzed. Results Thirty-eight women accepted D & C following UAE (group A), 10 patients had medicine (3 took trichosanthin injection, 7 took MTX injection) before UAE and D & C Uterine packing following emergency UAE were performed in another 3 women due to severe hemorrhage during direct curettage without pretreatment (group C). There were no significant significant differences between group A and group B about the serum β-hCG level resolution time and the blood loss in the opertation. Patients had shorter duration of hospital stay (P <0.01) and cheaper cost of hospitalization (P <0.05) of group A than group B. Conclusions Pretreatment with UAE befo re curettage is safe and effective in terminating CSP, reducing hospitalization cost. UAE followed by curettage is recommended to medical facilities where UAE is available.