1. Animal food: Try to choose varieties with high protein content and low fat content. Because the internal organs of livestock and poultry, especially the liver, are rich in trace elements such as vitamin A and iron, women should choose them more in the second and third trimesters. Poultry meat is low in fat, delicate in muscle, rich in protein, and the chicken stew is delicious, which can stimulate the secretion of digestive juice and is suitable for pregnant women. Fish muscle fibers are tender, rich in protein, and the fat is mainly unsaturated fatty acids. It is rich in vitamin B2, zinc and selenium, especially docosahexaenoic acid (DHA) in deep-sea fish fat, which is beneficial to the development of fetal brain and nerve. Pregnant women should eat more fish. The content and composition of essential amino acids in egg protein are more ideal than other animal foods. protein has high biological value and is the best protein among known natural foods. Egg yolk is also rich in calcium, iron, vitamin B 1 and vitamin B1.

Second, milk food: casein, the main component of milk protein, is phosphorus-containing compound protein, which has enough essential amino acids and is also a complete protein. The fat in milk has a low melting point and fine particles, which are easy to digest and absorb; In particular, milk is rich in calcium, which is easy to be absorbed. It is a good food source of calcium in the diet, and it is more suitable for pregnant women. Although cereals and vegetables contain a certain amount of calcium, they contain phytic acid, phosphoric acid, oxalic acid and cellulose at the same time, which affects the absorption of calcium. Milk contains almost all known vitamins, especially vitamins A and B2, and is an ideal food for pregnant women. It should be drunk more than 250g per day.

3. Soy foods: Soy is the food with the highest protein content and the best quality among plant foods. Except methionine, the content of other essential amino acids in protein can be comparable to that of animal protein, especially the lysine content of soybean protein is high, which can improve the nutritional value of cereal protein when eaten together with cereals. Soy fat is rich in linoleic acid, which is necessary to prevent pregnant women from raising blood lipid and fetal growth and development. Vitamin B 1 and B2 are abundant, and the price is low. It is best to take more than 100g daily. Some bean products, such as vegetarian chicken, dried brine, fermented bean curd, are high in calcium, which is also a good source of calcium. Stinky tofu is also rich in vitamin B1200g1.88.