Objective:To study the clinical value of ultrasound examination in diagnosing scar pregnancy in cesarean section u-terine incision.Methods:53 cases of cesarean section scar pregnancy patients who underwent regular prenatal examination in our hospital were selected from February 2019 to February 2022.All pregnant women underwent transabdominal ultrasound examination,transabdominal ultrasound combined with transvaginal ultrasound examination,with the gold standard being the postoperative pathological examination results.The ultrasound diagnosis results were observed and the relevant parameters of different ultrasound examination methods were compared.Results:The development rate of uterine scars(100.00%),RI(0.60±0.14),PI(1.21±0.22),and VFI(7.32±1.89)in transabdominal and transvaginal ultrasound examination were higher than those in transabdominal ultrasound examination,with statistical significance(P<0.05);In terms of clinical clas-sification and ultrasound imaging,the data for different examination methods are similar,P>0.05.Conclusion:Ultrasound examination has high diagnostic value in diagnosing scar pregnancy in cesarean section uterine incision,and can provide reliable imaging data support for clinical diagnosis and treatment.