Obstructive jaundice can be characterized by dark yellow, dark yellow or even yellow-green skin and mucous membranes, itching of the skin, dark urine, bradycardia, and light or white clay-colored stools. Obstructive jaundice is caused by obstruction of extrahepatic bile duct or intrahepatic bile duct, intrahepatic bile duct obstruction causing jaundice can be seen in intrahepatic mud-like stones, cancer embolism, parasitic diseases (such as Chinese testicular schistosomiasis), etc. Extrahepatic bile duct obstruction causing jaundice can be seen in common bile duct stones, stenosis, inflammatory edema, tumors, roundworms and so on due to the obstruction of the common bile duct, such as head of pancreas carcinoma, duodenal papillary carcinoma, biliary roundworms and so on. Obstructive jaundice is dominated by elevated serum bilirubin and positive urine bilirubin test. Because the enterohepatic circulation pathway is blocked, the urine or fecal bilirubin is reduced or absent, and the feces may be white clay-colored. If the eight liver function tests are performed, total bilirubin and direct bilirubin are commonly elevated in patients with obstructive jaundice, while indirect bilirubin is not elevated significantly. Patients with obstructive jaundice are advised to seek prompt medical attention for a definitive diagnosis and further treatment under the guidance of a doctor.