The nutritional status before pregnancy is also very closely related to the health of newborn babies later on. Nutrition not only builds your health, but also, your nutritional status before pregnancy is also very closely related to the health of newborns. If the nutritional status before pregnancy is good, the newborn's weight will be higher, healthy and active, and rarely sick during the perinatal period, and may even have a good impact on the child's intelligence. Therefore, the nutritional reserve status of pregnant women before pregnancy plays an important role in eugenics.