The fetal ultrasound report shows that HC is the fetal head circumference and AC is the fetal abdominal circumference, both of which can be known by ultrasound examination. If the report result shows normal HC and AC values, it means that the fetal head circumference and abdominal circumference are within the normal range of the gestational week, which means that the fetal growth and development are normal and there is no need to worry excessively; if the report result shows abnormal HC and AC values, it means that the fetal head circumference and abdominal circumference are not in accordance with the standard range values and further diagnosis is needed. If the fetal head circumference and abdominal circumference are large, it is necessary to pay attention to whether the fetus is huge or not, and further diagnosis is recommended through ultrasound screening. The presence of gestational diabetes mellitus should also be ruled out, as it can also lead to overgrowth of the fetus. If the HC and AC are small, it means that the fetus is small in overall development, so it is necessary to pay attention to whether there is malnutrition. It is recommended that pregnant women eat more nutritious food, such as fish, meat, soy products and other protein-rich food; if the situation is still not improved, you can take vitamins, calcium tablets and other medications for nutritional supplementation under the guidance of doctors. In addition, with the gradual development of the fetus, the mother’s basal metabolic rate increases, so it is necessary to strengthen nutrition during pregnancy, and to reasonably match the diet, and to eat foods rich in protein and vitamins, and not to eat partially or overeat.