1, the supply of various nutrients should be adequate. Various nutrients contained in food is the material basis of good nutrition. If the amount of nutrient intake in the diet is not enough, even the best diet can not provide good nutrition. 2, food diversity, avoid partial food. Each natural food has its own nutrient characteristics, and its nutrients will not be all-inclusive. Therefore, the nutrients we need daily should be taken from a variety of foods to ensure comprehensive nutrition. A partial diet is likely to miss or reduce the intake of one or more nutrients. Therefore, we advocate the diversity of food varieties. 3, food is mainly light, do not consume too much sugar, salt and oil. Sugar, salt and oil can also provide the nutrients we need. But too much sugar, salt and oil is harmful. Excessive intake of sugar may lead to excessive weight gain and may also induce high blood sugar during pregnancy. Excessive salt intake can aggravate edema during pregnancy and hypertension during pregnancy. Too much oil in the diet can likewise cause excessive weight gain and may lead to dyslipidemia. Therefore, you should choose a lighter diet that is rich in nutrients during pregnancy. 4, intake of sufficient water. It is recommended that the best drinking water during pregnancy is mineral water or plain water. You can also drink some fresh fruit juice, but should be controlled, not too much. 5, eat less and more meals. It is easier to be hungry when pregnant, so in addition to 3 main meals, it is best to have 2 to 3 additional meals, which can be arranged between brunch, lunch and dinner and before bedtime. 6.Fresh vegetables and fruits. Provide vitamins, minerals and trace elements as well as dietary fiber for pregnant women and fetuses. However, care should be taken that the amount of fruit should not be too much. The normal daily intake of pregnant women should not exceed half a pound. 7, eat less fast food and convenience foods. Fast food and convenience food is characterized by convenient consumption, time saving, more suitable for business trips and other outdoor activities when the work is busy to choose. But the nutrients in these foods are relatively single, more fat, and sometimes contain preservatives, antioxidants and other food additives. So it is not very suitable for consumption during pregnancy. 8, pickled, waxy, fumigated foods, pine eggs, etc. should be eaten less. Pickled, waxy, fumigated food and made of pine eggs are a way to preserve food for a long time, and this kind of food has some special flavor, so it is very popular. This processing method was even more significant in the days when there was no refrigerator. However, these foods lose a lot of nutrients during processing, especially vitamins, and there may be some unhealthy substances produced. Therefore, it is best to consume as little of this type of food as possible during pregnancy. 9, carbonated beverages and cola-type drinks should be used sparingly. Carbonated beverages are a kind of beverage made with chemical ingredients, not natural food. It contains flavors, colors and sugar or saccharin. Cola-type drinks contain high levels of phosphoric acid, sugar and caffeine, so they are not suitable for pregnant women to choose. 10, animal liver. Animal liver is rich in nutrients, should eat 1 to 2 times a week, but not too much to avoid overdose. 11, milk and dairy products. Milk and dairy products contain high-quality protein and calcium absorption rate is very good, so the daily intake should be half a pound to a pound and a half. 12, during pregnancy can not lose weight, do not drink strong tea, moderate consumption of coffee.