It is generally normal for the child to be 10 days too small for the 4D, so there is no need to be particularly nervous. Four-dimensional found that the fetus is small, although clinically generally normal phenomenon, but still need to pay enough attention. First of all, we should check the gestational week, and secondly, we should try to find the cause of the disease, the mother, the fetus, the placenta, the umbilical cord whether there is a problem, ultrasound dynamic observation of intrauterine fetal growth, pregnant women to strengthen the appropriate nutritional intake, drink more milk, high-protein diet, but also in the guidance of the doctor for medication, such as heparin and so on to enhance the blood circulation of the fetus. Fetal four-dimensional small, need to further improve the examination, under the guidance of the doctor to standardize the treatment, do not blindly take drugs, follow the doctor’s advice, active treatment.