There are many kinds of red spots after the baby is born, such as eczema, sweat rash or toxic erythema, which may be related to the diet during pregnancy. Eczema in newborns belongs to a kind of stress response of the immune system of the fetus. If the pregnant woman eats more spicy and stimulating food during pregnancy, it may make the immune system of the fetus more active, which will manifest as eczema under some stimulating conditions after birth. Toxic spots in newborns may be caused by the presence of certain heterogeneous proteins in the diet of the pregnant mother, which may lead to the development of toxic spots in the baby after birth. Some pregnant mothers who are overstressed and cover their babies tightly may also develop red spots, which at this point are not related to the pregnancy diet. If the baby is born with more red spots, it is recommended to seek medical attention in time, under the guidance of the doctor, to avoid unauthorized treatment of the baby’s eczema, to prevent the triggering of adverse consequences.