During pregnancy, due to the growth and development of the fetus and the increase of the mother’s own consumption, the demand for nutrients of pregnant women increases, and the phenomenon of hunger easily occurs in the middle of the night. Pregnant women can eat some soft and easily digestible food, such as bread, milk, cookies, noodles, etc. Avoid eating spicy and stimulating food, such as hot and spicy noodles, instant noodles, kebabs, etc., because at this time, the intestinal tract is at rest and the digestive and absorption functions are weakened, so eating stimulating food or eating too much can easily lead to indigestion and inability to sleep. If a pregnant woman does not eat at this time, it is easy to dizziness, weakness or hypoglycemia, long-term this will also affect the development of the fetus, so pregnant women can eat in the middle of the night when they are hungry, pay attention to the right amount. In addition, the diet during pregnancy should adhere to the principle of balanced nutrition, balanced diet, to ensure the intake of folic acid, iron, iodine and other elements to maintain the needs of the pregnant women themselves and fetal growth and development. Vitamins and trace elements are essential nutrients for pregnant women during pregnancy. Lack of vitamins and trace elements cannot provide sufficient nutrients to the fetus and increase the occurrence of complications during pregnancy and after delivery. In the early stage of pregnancy, try to choose foods that meet the taste of pregnant women to achieve the purpose of promoting appetite and increasing the amount of food eaten. Providing pregnant women with easily digestible food can alleviate the reaction to pregnancy vomiting to a certain extent, and it is recommended to eat less and more meals in moderation. In the middle of pregnancy, it is necessary to increase nutrition and energy supplementation, eat animal liver, animal blood, lean meat, beans and other foods in appropriate amounts to increase the intake of iron. Eating fresh vegetables and fruits in moderation and taking vitamin supplements can promote the absorption of iron.