Neonatal jaundice is a common phenomenon in the neonatal period, divided into physiological jaundice and pathological jaundice. If it is pathological jaundice and there is no active intervention, the continuous increase of jaundice can significantly affect the baby. There might be severe sequelae, such as a significant rise in indirect bilirubin, which could lead to bilirubin encephalopathy, affecting the normal function of his nervous system, leading to abnormalities in hearing or cognitive and motor development delays. In severe cases, it could even lead to the baby's death. If conjugated bilirubin is elevated, there might be abnormalities in liver function. If not promptly treated, there could be liver damage or failure, which in severe cases may also threaten the baby's life. Therefore, it is advisable to seek prompt medical attention and treatment if jaundice levels are high.