Percutaneous transhepatic biliary drainage or endoscopic retrograde cholangiopancreatography (ERCP) biliary stenting may be an option for cholestasis, which is more effective in draining the stagnant bile. When the bile duct is obstructed due to various reasons, the bile cannot be discharged in time and cholestasis occurs, which may cause abdominal pain, jaundice, inflammation, etc. in the long run. In this regard, percutaneous transhepatic biliary drainage or ERCP biliary stent implantation has been widely practiced in recent years, and the therapeutic effect is quite remarkable. Percutaneous transhepatic biliary drainage is one of the means to reduce jaundice before surgery by puncturing the dilated intrahepatic bile ducts under the guidance of X-ray or ultrasound, and placing a catheter with the help of a guide wire into the dilated intrahepatic bile ducts to decompress the bile, and at the same time, drain the bile that accumulates in the bile ducts at the same time. ERCP biliary stent implantation is a duodenoscopic technique, which reaches the duodenal papilla through the oral cavity, esophagus, and stomach, and then inserts a biliary stent into the bile duct through a guide wire. It is worth pointing out that the above two methods are symptomatic relief, the most fundamental method is to improve the relevant examination, diagnose the cause of cholestasis, and then standardize the treatment.