According to the degree of elevated bilirubin, neonatal hyperbilirubinemia has different clinical manifestations, including the following: physiological jaundice mainly manifests as follows: 1, jaundice color: only light yellow in light cases, darker in heavy cases, but the skin mucosa is more red, the performance is yellow in red; 2, the site of jaundice: yellow staining in light cases is limited to the face and neck, can spread to the trunk, sclera, heavy cases can be from the head to the feet throughout the The main manifestations of pathological jaundice are as follows: 1, the degree of jaundice: the appearance of early, in addition to the face and trunk of the child, can involve the limbs; 2, the color of jaundice: according to the degree of combined bilirubin, can appear orange, golden yellow or dark green, yin yellow, etc.; 3, the accompanying manifestations: according to the different jaundice typing, can be manifested as anemia, bleeding spots, fever, poisoning, liver enlargement, edema, urine color yellow etc.; 4, systemic symptoms: jaundice can manifest as poor response, depression, refusal to eat, reduced muscle tone and other symptoms when severe.