Neonatal jaundice is common during the neonatal period and can be divided into physiological jaundice and pathological jaundice. Physiological jaundice does not require intervention or treatment, and the baby's condition is generally okay. For physiological jaundice, the bilirubin level typically does not exceed 6 within the first 24 hours after birth, then not exceeding 9 from 24 to 48 hours, not exceeding 12 from 48 to 72 hours, and not exceeding 15 after 72 hours. If the monitored bilirubin levels exceed these ranges, there may be pathological jaundice, indicating abnormally high levels.