One: more nutrition is better than less, and the child is healthy if it is fat. I do not know that a direct consequence of excess nutrition is to lead to obesity, not only to increase the risk of gestational diabetes, gestational hypertension syndrome, but also may lead to the birth of huge children, increasing the number of difficult deliveries, prone to birth injuries; and huge children are prone to hypoglycemia, hypocalcemia, erythrocytosis, etc., but also a potential factor for obesity, diabetes, cardiovascular disease in adulthood. Second: Calcium supplementation during pregnancy, more is better. Most pregnant women take calcium supplements during pregnancy, which is mostly a blind act. Excessive calcium supplementation will increase the risk of kidney stones and milk-alkali syndrome (a group of clinical syndromes such as hypercalcemia, alkalosis and different degrees of renal impairment caused by long-term consumption of large amounts of milk or calcium and taking large amounts of absorbable alkali), and may also contribute to cancer induced by other factors. Therefore, normal pregnant women should try to obtain calcium from the diet, calcium deficient pregnant women can take calcium preparations under the guidance of a doctor. Three: vitamin supplementation should be early, it is okay to have more. Early pregnancy is the most active stage of fetal organ development, taking too much vitamin is very harmful to the fetus, vitamin A has a teratogenic effect in the early intake, and vitamin C can lead to miscarriage. Therefore, vitamin preparations should be supplemented from the middle of pregnancy, advocating the preference for food supplementation. Fourth: staple food without nutrition as little as possible. Staple foods contain a large amount of carbohydrates, whose main role is to provide energy and maintain blood sugar. The metabolism of the mother-to-be and the baby’s brain cells and the placenta also depend on the consumption of blood sugar to get energy. If you eat too little staple food, you will be prone to hypoglycemia and produce ketone bodies that are toxic to the nervous system. Five: weight gain is okay, and then lose weight after delivery. This idea is very wrong, the weight of pregnant women is one of the indicators to determine the nutritional status during pregnancy, pregnant women eat too much, calorie overload, nutritional imbalance, resulting in obesity of the mother, the fetus is too large, prone to gestational diabetes and fetal overweight, gestational diabetes can lead to serious maternal and infant comorbidities and complications. Six: eat a lot of fruit during pregnancy. Many pregnant women eat several pounds of fruit a day, eat a lot of walnuts and other nut foods, that more nuts children’s hair grow well. Excessive intake of calories, fat and sugar, easy to induce obesity during pregnancy, gestational diabetes, huge children, etc.. Remind mothers-to-be, eat fruit and nuts during pregnancy to moderate food, in general, daily fruit should not exceed 250 grams, walnuts and other nuts 1 to 2 can.