After pregnancy, pregnant women should take folic acid, calcium, iron and vitamin supplements under the guidance of their doctor. After pregnancy, it is recommended to have light and palatable meals, eat less and more often, ensure the intake of sufficient amount of carbohydrate-rich food, more intake of folic acid-rich food, and take folic acid supplements. Increase the intake of fish, poultry, eggs, lean meat, seafood and milk as appropriate. It is recommended to eat more iron-rich foods. During pregnancy, it is not only necessary to have a reasonable and balanced diet, but also to pay attention to proper physical activity and maintain appropriate weight gain; quit smoking, abstain from alcohol and eat less stimulating food. Pregnant women can increase nuts, such as walnuts, melon seeds and other nuts, according to the nutritional intake of three meals; eat more fresh vegetables and fruits, and should avoid excessive intake of fats, sugars and sodium.