Infant jaundice should more precisely be called neonatal jaundice, neonatal jaundice high harm is more, if the pathological jaundice is not treated in time, may cause the baby intelligence, hearing and nervous system is affected, for liver health is also very big impact, and can affect the normal growth and development of children and harm. Neonatal jaundice is a disease caused by bilirubin in the serum that is not excreted in time and collects in the blood. The greatest danger of infant jaundice is that bilirubin will combine with brain cells and cause bilirubin encephalopathy, which in the early stage will show drowsiness, hypotonia, followed by convulsions, and in the posterior stage may cause damage to tooth enamel, hearing loss, intellectual and speech dysfunction. After recovery, there is a possibility of dementia, mental retardation, slurred speech, deafness and a series of other sequelae. If not treated in time, it may even cause infant death. Therefore, severe jaundice in newborns is very dangerous for infants and needs to be treated promptly. However, if the jaundice is physiological, it does not have a great impact on the newborn’s body and does not require special treatment or therapy, and can subside on its own. If jaundice continues to increase in newborns and does not subside, they need to be treated in the hospital in a timely manner. The earlier the treatment, the better the results and the least damage to the baby’s body.