Biliary drainage methods generally include PTCD (percutaneous transluminal biliary drainage), ENBD (endoscopic nasobiliary drainage), and surgical drainage methods. 1.PTCD: Under the guidance of influence technology, through the skin to the liver puncture, and in the bile duct into a drainage tube, so as to drain the biliary fluid to the patient’s body outside the method, belongs to the external drainage method. This method can be used to drain patients with obstructive jaundice, acute suppurative cholangitis, and biliary liver abscess. 2.ENBD: The general method is assisted by duodenoscopy to find the duodenal papilla, and then one end of the nasobiliary tube is inserted into the bile duct through the duodenal papilla, and the other end is drained out from the patient’s nasal cavity, so that the fluid in the biliary tract can be drained to the patient’s body, which is an external drainage method. In addition, the nasal bile duct may not be used, but the use of biliary stent, stent drainage directly into the duodenum, belongs to the internal drainage. 3. Surgical drainage: common surgical drainage methods include biliary-enteric anastomosis, gallbladder jejunostomy and so on. It is a method of directly draining bile into the patient’s intestines, which belongs to the internal drainage method. If you have biliary tract diseases, you should immediately go to the relevant departments of regular hospitals and be treated under the guidance of professional physicians to avoid delaying your condition.