[Objective]To discuss the vaule of prenatal ultrasound in diagnosis of fetal malformation of digestive tract.[Methods] Ultrasound features of 26 cases of fetal malformationn of digestive tract were retrospectively analyzed, and compared the characteristics postnatal and after induced labor.[Results] 22 cases of prenatal ultrasound diagnosis was basically consistent with postnatal and after induced labor, 4 cases were missed diagnosis.[Conclusion] Prenatal ultrasonography has important diagnostic value, which can diagnose most of fetal malformation of digestive tract.