Jaundice and high serum bilirubin level, the etiology of which includes hemolytic factors, hepatocellular factors, cholestatic factors, and congenital factors. 1. Hemolytic jaundice: congenital hemolytic diseases such as thalassemia and hereditary spherocytosis; acquired hemolytic diseases such as autoimmune hemolytic anemia, neonatal hemolysis, post-transfusion hemolysis, serosanguinosis and muscarinic poisoning. 2. Hepatocellular jaundice: mainly caused by viral hepatitis, cirrhosis, toxic hepatitis, leptospirosis, sepsis and other diseases leading to severe damage of hepatocytes and affecting bilirubin metabolism. 3. Cholestatic jaundice: including intrahepatic bile duct obstruction caused by intrahepatic bile duct stones, cancerous embolism, parasitic disease and other diseases; intrahepatic biliary siltation caused by viral hepatitis, primary biliary cirrhosis and other diseases; as well as extra-hepatic biliary siltation caused by common bile duct stones, stenosis, inflammatory edema, tumors and other diseases. 4. Congenital jaundice: including Gilbert’s syndrome, Dubin Johnson syndrome and other diseases. If jaundice occurs, or if you suspect any of the above diseases, it is recommended that you go to the hospital in time.