Nutritional fluids are useful when there is a poor nutritional supply to the fetus, but they are generally not useful when the problem is due to maternal complications and other reasons. If the fetus has the problems of maternal paranoia, pregnancy vomiting and insufficient intake of nutrients such as proteins and vitamins, it can be supplemented with nutrients through nutritional infusion, which will be effective to a certain extent. If the nutritional supply is insufficient due to maternal complications, such as gestational hypertension, pregnancy heart disease, etc., nutritional supplementation is useless in such cases. Pregnant women should eat more food rich in protein during pregnancy, such as eggs, pork lean meat, soy products, milk and so on. It is also necessary to properly supplement shrimp, fish, pork liver, oats, walnuts, peanuts and other foods, eat more fresh vegetables and fruits, to ensure that the intake of food nutritionally balanced to meet the needs of fetal development. It is recommended that women undergo regular checkups during pregnancy to determine if there are any problems based on the growth of the fetus, actively search for the cause of the problem, and if necessary, use interventional prenatal diagnostic techniques to analyze the growth of the fetus.