The tests needed for neonatal jaundice include general physical examination, serum total bilirubin test, routine blood test and other comprehensive tests. 1. General physical examination: observe the child’s performance or ask questions to observe the child’s mental state and ability to respond to external stimuli, skin yellowing, limb tension and other manifestations. 2. Serum total bilirubin examination: it is necessary to take the child’s venous blood or micro blood to determine the concentration of serum total bilirubin in the body, which is conducive to the diagnosis of neonatal jaundice. Generally speaking, the serum total bilirubin concentration of newborns with physiological jaundice does not exceed 12.9mg/dL, and the jaundice of small children often subsides within two weeks. 3. blood routine examination: through the blood of red blood cells, hemoglobin, reticulocytes and other cell count examination, to help check the newborn hemolytic disease. In short, when newborns have yellow staining of the skin, mucous membranes, sclera and other manifestations, parents should pay attention to it and bring their children to the pediatrician in the hospital in a timely manner, so as to clarify the condition.