The causes of recurrent neonatal jaundice include the persistence of the primary disease, secondary infection, hemolysis, and so on. 1. Persistence of primary disease: the cause of neonatal jaundice persists, which means that the jaundice has not been cured. After the diagnosis of jaundice, the newborn is treated with blue light irradiation and blood exchange, and the jaundice is reduced, but the treatment is ended before it is completely cured. After some time bilirubin will build up and jaundice will reappear. 2. Secondary infection: Jaundice in newborns is cured, but jaundice reappears after a few days, which may be due to a new infection, which leads to abnormal bilirubin metabolism in newborns, and then jaundice occurs. 3. Hemolysis: Hemolysis in newborns is mainly manifested by the recurrence of jaundice, which can also lead to recurrence. Newborn jaundice has been recurring, there may also be other reasons, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.