Infant jaundice is mainly due to the following causes: 1, physiological jaundice, which is due to the fetus in the pregnant woman’s womb in the oxygen-deficient environment in the high hemoglobin, after birth, the excess hemoglobin needs to be excreted, resulting in increased bilirubin caused by jaundice, this condition will not be higher than 12.9mg/dL, generally about 2 weeks to subside. 2, hemolytic jaundice, this condition is mostly seen in pregnant women are The jaundice is high and needs to be treated with blue light. 3, Infectious jaundice, this condition is mostly seen in bacterial and viral infections, the blood test can see an increase in inflammatory indicators, the corresponding viral antibodies can be positive, you need to give the corresponding anti-infection and antiviral treatment.