Ultrasound is a relatively accurate test, and the probability of a fetus being born well with a faulty ultrasound diagnosis is extremely low. Ultrasound is a method of determining the echogenicity of tissues through ultrasound, so as to determine whether the fetus has an abnormal morphology. It can determine the biparietal diameter of the fetus, the length of the femur, etc. It can also determine the structure of the child’s heart, the fetal heart condition and thus determine the presence of congenital heart disease. ultrasound is a commonly used and highly accurate clinical examination, and the results are generally relatively reliable. If the ultrasound examination of the fetus has problems, it is recommended that further examination be conducted in a timely manner to confirm the diagnosis, and under the guidance of the doctor to determine the severity of the situation, according to the different causes of the disease to take targeted treatment to avoid delays in the condition.