In order to promote the normal development of the fetus, it is necessary to enhance nutrition throughout pregnancy. As the nutritional needs of pregnant women differ at different stages of pregnancy, a scientific and reasonable diet based on the nutritional needs of different stages of pregnancy is generally more conducive to the healthy growth of the fetus. Specific dietary guidelines are as follows: 1. Early pregnancy: pregnant women have nausea, vomiting, anorexia and other early pregnancy reactions, which may result in insufficient food and malnutrition. At this time, we should ensure sufficient nutrition by taking 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, soy products, fresh fruits and vegetables; 2. Mid-pregnancy: this is the stage of rapid growth and development of the fetus, especially brain development, eggs, kelp, shrimp, dried bean curd, etc.;? 3, late pregnancy: the fetus grows more rapidly at this stage, plus the pregnant woman has to reserve enough energy for delivery and breastfeeding in late pregnancy. In addition to ensuring the supplement of protein, vitamins, sugar and other nutrients, but also pay attention to increase the supplement of iron, calcium, zinc and other trace elements. Therefore, eating more pork liver, fish, meat, egg yolk, purple cabbage, dried shrimp skin, black fungus and other foods are more beneficial to both pregnant women and fetuses, but need to control weight as appropriate.