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Biliary tract drainage tube capable of bile backflow

The utility model provides a biliary tract drainage tube capable of bile backflow, comprising an external pipe portion, a stomach tube portion and a bile duct portion, which are communicated in order. The tail end of the bile duct portion is a pointed end and is provided with an opening. The biliary tract drainage tube is characterized in that the biliary tract drainage tube also comprises an intestinal tube portion having an opening; the intestinal tube portion is connected to a combination part of the stomach tube portion and the bile duct portion, and is communicated with the stomach tube portion and the bile duct portion; the integral biliary tract drainage tube is a Y-shaped integral structure. During an operation, the front end of the bile duct can be placed in a common bile duct through a choledochoscope, and the front end of the intestinal tube is disposed in a duodenum. When the outer end opening of the external pipe portion is sealed, bile can flow back into the duodenum through the bile duct and the intestinal tube under the function of internal pressure. The biliary tract drainage tube capable of bile backflow is advantageous in that the use is convenient; the pain of patients can be greatly reduced; living quality of patients can be improved; other symptoms can be prevented.