Objective：To analyze the sonographic features of fetal abdominal cysts in prenatal ultrasonography and to identify the cor－responding points in order to reduce the misdiagnosis rate and to improve the accuracy of prenatal ultrasonography in the diagnosis of abdominal cysts. Methods：Retrospective analysis of 68 cases of abdominal cysts in our hospital from June 2014 to June 2016 was conducted. The prenatal ultrasonography results were compared with postnatal reexamination and autopsy results. Results：Compared with the results of prenatal ultrasonography diagnosis and postnatal or autopsy，3 cases were misdiagnosed，and the misdiagnosis rate was 4.4%. In 68 cases of fetal abdominal cyst diagnosed by prenatal ultrasound，postpartum or autopsy found 9 cases of ovarian cyst，10 cases of duodenal obstruction，3 cases of intestinal obstruction，1 case of intestinal obstruction，1 case of anal atresia，8 cases of in－testinal duplication，2 cases of mesenteric cyst，2 cases of biliary atresia，4 cases of renal cysts，3 cases of polycystic kidney. Multicys－tic dysplastic kidney in 11 cases，8 cases of hydronephrosis of grade Ⅲ or above，2 cases of ureteral dilatation，3 cases of giant blad－der，1 case of pancreatic cancer were observed. Conclusion：The disease can be accurately diagnosed by prenatal ultrasound com－bined with observing the position，shape，size，blood flow and adjacent organs of fetal abdominal cyst，and gestational age. This infor－mation can improve the prenatal detection rate of fetal malformation，and provide important clues for prenatal and perinatal manage－ment and early treatment for certain diseases.