Newborns with red skin, considering the normal phenomenon, fever, allergic reactions and other causes. 1. Normal phenomenon: due to the newborn’s own skin is relatively thin, and rich in capillaries, red blood cells, if the capillary expansion will lead to redness of the skin, with the gradual development of the newborn’s skin, will gradually return to normal. 2. Fever: may be due to the newborn baby suffers from infectious diseases, such as respiratory infections, central nervous system infections, resulting in fever, general body temperature of more than 38.5 degrees, will lead to skin redness. 3. Allergic reaction: it may be due to the newborn’s skin contact with allergens, such as pollen, dust, etc., resulting in allergic symptoms. Newborn skin red, there may be other reasons, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.