The difference between physiological jaundice and pathological jaundice is as follows: 1. Physiological jaundice: mainly occurs within 2-3 days of birth, mainly with mild yellowing of the skin and sclera, and generally without special symptoms. It only requires baking blue light or supplemental water, nutrients, and more sunlight to subside; 2. Pathological jaundice: mainly occurs earlier, within 24 hours of birth, and the skin and sclera jaundice is more serious, and can be combined with more digestive symptoms, not thinking about eating, etc., and its remission time is longer. Therefore, pathological jaundice is mainly common in hemolytic, infectious, hepatic and obstructive problems, and in severe cases, it can cause bilirubin encephalopathy, i.e. nuclear jaundice. Based on the above characteristics, a distinction is made between pathological jaundice and physiological jaundice.