High jaundice in newborns does not necessarily require hospitalization for blue light. High jaundice in newborns can be divided into physiological jaundice and pathological jaundice, physiological jaundice can generally subside on its own after a period of time, while most pathological jaundice cannot subside on its own and requires hospitalization for blue light treatment. 1, physiological jaundice: generally appears within 2-3 days of birth, transdermal bilirubin will be less than 12.9 mg/dl, reaching a peak of jaundice in 4-5 days of life, 5-7 days, and dissipating no later than 2 weeks. The jaundice peaks at 4-5 days of life and recedes at 5-7 days, and does not exceed 2 weeks at the latest, this condition is physiological jaundice. Physiological jaundice tends to subside over time and can be treated without hospitalization with blue light; 2. Pathological jaundice: If the jaundice does not subside for a long time, for example, if a full-term newborn has jaundice for more than 2 weeks, a premature baby for more than 4 weeks, and if the transdermal bilirubin is greater than 12.9 mg/dl, pathological jaundice is generally present. Pathological jaundice does not subside on its own and requires prompt hospitalization for blue light irradiation, as blue light irradiation is a common treatment for pathological jaundice, which can promote excretion of unconjugated bilirubin and reduce jaundice in newborns. If a newborn has high jaundice, the specific situation of the newborn needs to be clarified, and it is also important to cooperate with the doctor’s treatment. If the jaundice is physiological, there is usually no need for medication, so more sunshine and reasonable feeding can be given after returning home. If breast milk jaundice is considered, breastfeeding should be suspended. If pathological jaundice occurs in newborns, treatment should be directed at the cause, and care should be taken to protect the newborn’s eyes, perineum, anus and other parts of the body during routine blue light exposure.