Jaundice is divided into two types: physiological and pathological, and how long it takes to subside is related to its type and severity, which requires specific analysis. Physiological jaundice is common in the newborn period, mainly due to abnormal bilirubin metabolism, resulting in elevated bilirubin levels in the blood and yellowing of the skin, mucous membranes and sclera, which can generally gradually subside on its own after 2-3 days and return to normal skin color in about 1 week. In the case of pathological jaundice in newborns, the degree is generally heavier and progresses faster, mostly appearing within 24 hours after birth, with some appearing only 1 week to several weeks after birth, lasting for a long time and prone to recurrence, requiring timely intervention and treatment. If the jaundice is caused by liver disease such as hepatitis or liver injury, it needs to be judged according to the severity of its condition. Generally, after antiviral treatment and liver-protective drugs, most of the skin yellowing can recede in about 2-3 weeks. Therefore, it is recommended to seek medical attention from a pediatrician or hepatobiliary surgery department when jaundice appears to further clarify the diagnosis by a medical professional and then actively pursue targeted treatment.