When a pregnant woman feels hungry, the fetus will not feel hungry because there are stored nutrients in her body for the fetus to absorb. During pregnancy, the fetus mainly takes in various nutrients from the mother through the placental blood circulation. After the pregnant woman eats, the nutrients will not be immediately absorbed by the body in its entirety, but will be partly stored in the body to meet the needs of the fetus, so the fetus will not be hungry when the pregnant woman is hungry. However, if a pregnant woman does not have enough nutrient intake and does not eat on time, it will lead to a decrease in the nutrient content in the blood, which will affect the fetus’ intake of nutrients and will affect the normal growth and development of the fetus if this goes on. It is recommended that pregnant women should try to eat small amounts of meals during pregnancy, and when they feel hungry they can eat some snacks, such as walnuts, pine nuts, etc. This type of food can not only relieve hunger, but also does not cause the accumulation of food.