Nutrition during pregnancy is very important, pregnancy is divided into early, middle and late, need to reasonably supplement nutrition, intake of vitamins, proteins, carbohydrates, etc., composed of diversified food nutritionally balanced diet, the growth and development of the fetus is good. 1. Early pregnancy: meals are light and palatable, easy to digest, should eat small meals, to ensure that the intake of carbohydrate-rich foods, more intake of folic acid-rich foods, and supplement folic acid, quit smoking and alcohol. 2. Middle and late pregnancy: should be appropriate to increase the fish, poultry, eggs, lean meat and other sources of high-quality protein, mid-pregnancy daily increase of a total of 50 grams, late pregnancy and then increase about 75 grams. Appropriately increase the intake of milk, increase the intake of iodine, often eat iron-rich foods. Take a moderate amount of physical exercise to maintain appropriate weight growth. Avoid smoking and alcohol, and eat less stimulating food.