Baby’s yellow skin may be caused by food factors, physiological jaundice in newborns, pathological jaundice in newborns, liver disease and other factors. 1. Food factors: children eat a lot of carrots, oranges and other foods in a short period of time, it may lead to yellowing of the skin, just a short period of time, after adjusting the diet to subside on its own. 2. Physiological jaundice of newborns: it mainly appears in the body of newborns, but the skin of newborns is yellow, and the level of jaundice is generally low, with no other obvious abnormality, and it can be improved by itself. 3. Neonatal pathologic jaundice: the onset of jaundice in newborns can lead to abnormal levels of serum bilirubin in the body, which will cause yellowing of the skin of the child, and may be accompanied by poor appetite, vomiting, yellowing of the urine and other symptoms. 4. Liver disease: viral hepatitis, for example, is usually associated with viral infections, the onset of a more acute, will make the child yellow skin, accompanied by fever, abdominal pain and other symptoms. The baby’s skin is yellow, and there are other obvious abnormalities, may be the existence of disease factors, should seek medical treatment for appropriate examination and treatment.