The examination items of hepatobiliary system stones are: 1, ultrasound, CT: to determine the presence of stones and determine the specific location; 2, blood routine: to observe whether there is an increase in white blood cells and neutrophils and determine the infection; 3, blood sedimentation or C-reactive protein: to determine the presence of inflammation and infection indicators; 4, liver function: to determine the presence of obstruction or jaundice type; 5, urine routine: to check whether the bilirubin is positive and whether the jaundice is caused by obstruction; 6, ERCP: to clarify whether there are stones in the biliary tract and the stones can be directly removed.