The 27th week of pregnancy belongs to the middle and late stages of pregnancy. During this period, it is recommended to have a balanced intake of all kinds of food including fish, poultry, eggs, lean meat and milk, etc., so as to maintain an appropriate weight gain. The middle to late stage of pregnancy is a period of rapid fetal development and weight gain. In this period of diet, it is recommended to ensure a balanced intake of fish, poultry, eggs, lean meat and other high-quality protein and unsaturated fatty acid intake of intake. It is also recommended to consume seafood at least once a week to ensure iodine intake. In addition, supplemental dairy products can not only ensure the intake of protein, but also increase calcium supplementation. After mid-pregnancy women need to be alert to iron deficiency anemia, it is recommended to add blood products, liver and other iron-rich foods to the diet, and iron deficiency found in the maternity test can be supplemented with a small dose of iron under the guidance of the doctor. At the same time, pay attention to eat more vegetables, fruits and other foods rich in vitamin C.