There are two types of jaundice, one is physiological jaundice and the other is pathological jaundice. Most newborns begin to show mild yellow staining in the skin, oral mucosa and the white part of the eyes 2 to 3 days after birth, while the palms of the hands and feet usually do not show yellow staining, which will subside on its own a week to 10 days after birth, during which time feeding, sleeping and growth are good, urine and stool are normal in color, and there are no other uncomfortable manifestations, if blood tests show normal serum total bilirubin concentration, this phenomenon is called This phenomenon is called “physiological jaundice”. If the phenomenon of jaundice occurs within 24 hours after birth, the serum bilirubin is not normal, the limbs and or the hearts of the hands and feet appear yellow, progresses rapidly and is slow to recede or reappears after a slight receding, drowsiness, refusal to eat milk, irritability, and even convulsions are symptoms of pathological jaundice, and must be treated at a hospital. Why does jaundice occur in babies? There are many reasons for the appearance of physiological jaundice, mainly because the fetus is relatively oxygen deficient and needs a lot of red blood cells to compensate for the lack of oxygen carried by each red blood cell. After the baby is born, he or she can receive oxygen directly, so the supply of oxygen is sufficient and there is no longer a need for too many red blood cells to carry oxygen, so these extra red blood cells are destroyed by the body and excess bilirubin is produced. Bilirubin has to be transformed by the liver to be excreted from the body, and the newborn’s liver is not yet functional, so excessive yellow bilirubin accumulates in the blood, and when it exceeds a certain amount, it stains the skin, mucous membranes and whites of the eyes yellow. Physiological jaundice generally has no effect on the health of the child and does not require special treatment. How to solve baby jaundice? (1) Slow remission in premature babies: If the baby is a premature baby, the remission of jaundice will generally be slower and may last 3 weeks or even longer, but the jaundice should show a tendency to gradually decrease and the general condition is good. Otherwise, prompt medical attention should be sought. (2) If the baby is exclusively formula-fed and jaundice is still evident 2 weeks after birth, immediate medical attention should be sought. (3) Breastfeeding jaundice is nothing to worry about: breastfed babies, if jaundice is still evident or continues to deepen 1 week after birth, but good spirit, good appetite, yellow stools, good weight gain, and no abnormalities through examination, can generally be considered as breast milk jaundice. The jaundice generally decreases after 3 days of stopping breast milk, and it subsides significantly after 5 to 7 days of stopping. Breast milk jaundice does not usually cause adverse effects on the infant (unless the jaundice is too deep). Since suspension of breastfeeding may cause discomfort to the child or mother, it may be possible to continue breastfeeding under observation provided that the jaundice is not severe. Breast milk jaundice usually resolves completely within 2-3 months after birth.