Neonatal jaundice is a common phenomenon during the neonatal period, it is usually considered normal for a 15-day-old neonate to have a jaundice value of 4.1mg/dl, but it needs to be analyzed in the context of the specific situation, in particular, it is necessary to pay attention to differentiate between the standard values for jaundice values of the various institutions. Neonatal jaundice, also known as neonatal hyperbilirubinemia, usually occurs when serum bilirubin exceeds 5-7mg/dl and is visible to the naked eye. Currently, the risk of bilirubinemia is commonly assessed using a differentiation curve of bilirubin values at day or hour of age. For neonates with bilirubin less than about 13mg/dl at a day of age greater than 6 days, it is considered to be in the low-risk zone, and therefore a neonatal jaundice value of 4.1mg/dl at 15 days of age is usually considered to be normal. However, specific cases need to be analyzed, such as dynamic monitoring of the jaundice value, jaundice values found to be elevated, jaundice recurrence, it may be an abnormal situation. It is recommended to consult a specialist for evaluation and judgment.