Neonatal jaundice is one of the most common conditions in newborns. Due to the metabolic characteristics of bilirubin in newborns, about 50%-60% of full-term infants and 80% of preterm infants experience jaundice. Jaundice is categorized into physiological jaundice and pathological jaundice. If it is physiological jaundice, the duration typically does not exceed two weeks in full-term infants, and in preterm infants, it can extend up to three to four weeks, generally not exceeding four weeks. If the jaundice progresses quickly and is severe, and if its resolution is delayed, there might be an underlying pathological jaundice. Pathological jaundice may involve certain pathological factors, necessitating a hospital visit. Based on the baby’s specific conditions, targeted examinations should be conducted, and treatment should focus on the underlying cause to actively manage the jaundice. The length of time jaundice takes to resolve may vary depending on the cause or the condition of the baby. How the jaundice subsides depends on the condition. If pathological jaundice is not promptly managed, the severity of the jaundice may increase, and there may be a risk of severe complications. Therefore, if the jaundice level is high and parents are unsure, it is advised to have it checked at a hospital. If pathological jaundice is confirmed, timely intervention and treatment are necessary.