Neonatal jaundice is one of the common symptoms during the newborn period, especially in early newborns. It can be a symptom that appears in the normal development process, or it may be a manifestation of certain diseases. Generally, neonatal jaundice is divided into physiological jaundice and pathological jaundice. Typically, physiological jaundice gradually increases to a certain level and then subsides, and does not recur. If the jaundice recurs, or if it significantly increases after decreasing, or reappears after subsiding, it is definitely pathological jaundice. Pathological jaundice has many possible causes, commonly including infections, hemolysis, or other genetic metabolic diseases, or some red blood cell disorders, all of which can affect the recurrence of jaundice. Therefore, if the jaundice recurs, it is advisable to visit a hospital. A neonatologist will conduct relevant examinations based on the baby's condition to confirm if it is pathological jaundice. The cause should be clearly identified for targeted treatment, followed by symptomatic treatment, and timely intervention is necessary.