Abstract
Ultrasound examination during pregnancy has become an important part of prenatal care in China and even the world, and it has a vital diagnostic role for malformations and lesions of various fetal systems. A variety of fetal malformations can be treated in utero after prenatal diagnosis or timely treatment after delivery. However, many congenital diseases cannot be confirmed by ultrasound diagnosis, or the prenatal ultrasound performance is inconsistent with the postpartum clinical outcome, which has become a shortcoming of ultrasound diagnosis during pregnancy. This article reviews the main points of ultrasound diagnosis of common fetal malformations.