Neonatal jaundice is relatively common and its causes are usually related to the characteristics of neonatal bilirubin metabolism, which are mainly manifested in the following aspects: First, excessive production of bilirubin; second, poor ability of plasma albumin to bind bilirubin; third, poor ability of liver cells to process bilirubin; fourth, the enterohepatic circulation is more prevalent than in adults, thus making physiological jaundice more likely to occur. Furthermore, some children are affected by breastfeeding, with a portion of breastfed babies experiencing breast milk jaundice. Other factors include pathological reasons, such as viral infections common in hepatotropic viruses like cytomegalovirus, TORCH, etc.; jaundice can also occur following exposure to cold, which can lead to decreased resistance and bacterial infections; additionally, some children have jaundice due to genetic metabolic reasons.