When a jaundiced patient with “yellow face and red urine” is admitted to the ward, the patient in the next bed immediately gets nervous and clamors to change beds for fear of being infected. Jaundice and hepatitis are often thought of as one disease, and people often avoid these patients. In fact, sometimes jaundice is not contagious and is a surgical disease. Commonly known as “jaundice” in medicine is divided into three types: 1, hemolytic jaundice: “hemolytic”, also known as prehepatic, as the name implies, that is, caused by hemolysis; 2, hepatic jaundice: “hepatic “, that is, caused by abnormal liver function, mostly hepatitis, cirrhosis, etc., that is, there is usually considered infectious part; 3, obstructive jaundice: “obstructive”, also known as post-hepatic, is due to extrahepatic bile duct or intrahepatic bile duct obstruction caused by jaundice, of course, there is no infectious. The causes of obstructive jaundice are of two types. The benign causes, most commonly bile duct stones or gallbladder stones, are the most common. The stones block the bile ducts, causing the bile to be unable to drain into the duodenum. The other category is malignant causes, such as (1) malignant tumors of the bile duct itself or the gallbladder (cholangiocarcinoma); (2) cancer of the head of the pancreas; (3) cancer of the duodenal papilla; (4) embolism of the liver; and (5) obstruction of the bile duct caused by pressure from enlarged lymph nodes adjacent to the bile duct of a cancer patient. The first two types of jaundice can be treated by internal medicine, while obstructive jaundice cannot be completely solved by internal medicine alone and requires surgical treatment to remove the obstruction, so it is sometimes called “surgical jaundice”. There are different ways to deal with different causes of biliary obstruction. Traditional surgery used to be the main surgical method, but nowadays, with the improvement of technology, traditional surgery has gradually become an auxiliary method in major hospitals, and many problems that previously required open surgery can be treated through minimally invasive endoscopic treatment. For example, for common bile duct stones, the success rate of ERCP is more than 90%, the overall complication rate is 5%, and the mortality rate is less than 1%, which are better than surgical treatment. Most of the patients with biliary tract and pancreatic tumors are already in advanced stage when they are found, so surgery cannot prolong life, but with the purpose of ‘improving the quality of life and prolonging survival’, ERCP is a “no-incision” method to place stent drainage, which is less invasive and quicker, and can relieve The superiority of ERCP has been fully recognized by the medical profession as it allows patients to live like normal people in the shortest possible time, while the survival time is not shorter than that of surgical patients. With the improvement of people’s living standard, the increase of high-fat and high-protein food intake, as well as the unqualified food safety, biliary and pancreatic diseases have increased rapidly in recent years, especially malignant tumors, so we hope that this technology of ERCP can be understood by more people, so that it can benefit human beings to the maximum extent, so that patients can overcome the disease more easily and achieve the most ideal treatment effect.