A macrosomia is a test to check the fetus for any malformations, specifically checking fetal growth and development parameters such as biparietal diameter, occipital frontal diameter, abdominal diameter, body position, heart rate, and course of motion. A major screening is done when a pregnant woman is 20-24 weeks old. This test is done to see if there are any serious malformations in the development of the fetus. There are two types of screening during pregnancy, the first one is at 20-24 weeks of pregnancy and the second one is at 26-30 weeks of pregnancy, specifically checking the fetal biparietal diameter, occipitofrontal diameter, abdominal diameter, body position, heart rate, course of movement and other parameters of fetal growth and development. In addition, the macrosomia program also examines organs including the cerebellum, stomach, four chambers of the heart, and both kidneys, the fetal face and limbs such as the upper lip, tibia, fibula, pubic bone, radius, and spine, as well as fetal auxiliary structures such as the amniotic fluid and the lower edge of the placenta. Through the macro-anomaly examination can be ruled out serious malformations of the fetus, it is recommended to do timely maternity examination during pregnancy, in the 20-24 weeks of pregnancy timely macro-anomaly examination, if the results of the examination are different, you need to immediately consult a doctor for diagnosis and treatment, follow the doctor’s instructions for standardized treatment.