Cesarean scar pregnancy is a special position of ectopic pregnancy.Early,timely,and accurate diagnosis can provide a scientific,effective and individualized treatment plan for the clinic,which can effectively reduce the risk of uterine rupture and massive bleeding.This paper reviews the different imaging methods and imaging characteristics of cesarean scar pregnancy,so as to further improve the understanding of imaging doctors on the manifestations and classification of scar pregnancy by ultrasound and magnetic resonance imaging.