Pregnant women should enhance nutrition throughout pregnancy, but because the nutritional needs of pregnant women differ in different stages of pregnancy, so the diet should be arranged scientifically and reasonably according to the nutritional needs of different stages of pregnancy, as follows: 1. Early pregnancy: pregnant women have nausea, vomiting, anorexia and other early pregnancy reactions, which may cause insufficient food and malnutrition. At this time, we should ensure adequate nutrition by adopting the method of eating less and more meals. When arranging recipes, pay attention to the nutritional quality of the diet and eat more foods rich in protein and vitamins, such as fish, meat, eggs, dairy products, soybean products, fresh fruits and vegetables; 2. Mid-pregnancy: the early pregnancy reaction disappears and the appetite increases. So the diet should pay attention to more protein and vitamin-rich food, and more food containing calcium, iron and other trace elements, such as fish, meat, eggs, kelp, shrimp, dried tofu, etc.; 3, late pregnancy: the fetus grows more rapidly, plus the pregnant women in late pregnancy also need to reserve enough energy for delivery and breastfeeding. In addition to ensuring the supplementation of protein, vitamins, sugar and other nutrients, attention should also be paid to increasing the supplementation of iron, calcium, zinc and other trace elements. It is recommended to eat more pork liver, fish, meat, egg yolk, purple cabbage, dried shrimp skin, black fungus and other foods to meet the nutritional needs.