The special states of newborns are: 1. Physiological weight loss. Newborns in the days after birth, due to less food, water loss, meconium excretion, weight loss, but generally not more than 10%, about 10 days after birth back to the birth weight. 2, physiological jaundice. Jaundice generally appears 23 days after birth, 4-5 days most obvious, 10-14 days to subside, premature infants can be delayed to 3-4 weeks. The child is generally well, with normal appetite and no other clinical symptoms. 3. Physiological mammary enlargement. Due to the interruption of estrogen from the mother, male and female newborns 3-5 days after birth, the mammary glands can be touched with a lump the size of a bean or walnut, mostly in 23 weeks to subside, do not squeeze to avoid infection. 4, pseudomenstruation. Some baby girls can see a little bloody vaginal discharge 5-7 days after birth, which lasts 2-3 days and then stops. This is due to the maternal estrogen entering the fetus during pregnancy and the sudden interruption of estrogen influence after birth. 5, changes in the oral cavity. Newborns often have small yellowish-white spots on the midline of the palate and gingival cutting edge, which are caused by the accumulation of epithelial cells or mucus gland secretions, commonly known as “epithelial beads” and “plate teeth”, which disappear on their own a few weeks to a few months after birth and do not require treatment. The newborn’s cheek fat pad is commonly known as the “mantis mouth”, beneficial to sucking breast milk, should not be picked and cut to avoid infection. 6, neonatal corn rash – the tip of the nose after birth has a corn rash.