Duodenal drainage tube for baby

The utility model relates to a duodenal drainage tube for a baby, which comprises a long circular tube made of silicon rubber. The front end is a dead end (1), a liquid entering hole (2) is arranged on a tube wall of the front part, the end is provided with a liquid pumping hole (3), the inner part of the dead end (1) is embedded with a metallic corpusculum (4), the outside of the tube wall is provided with scale marks, a hole plug (5) is arranged on the liquid pumping hole (3) of the end, an outer diameter is 2 mm to 3 mm, and an inside diameter is 1 mm to 1.8 mm. The utility model has the advantages that the utility model is ease for entering a baby's duodenum through the baby's pharynx nasalis without damnifying a nose, an esophagus and a gastric mucosa, a lumen is not easy for clogging, the required time for the entering of the utility model to the duodenum is short, etc. The utility model is suitable for the diagnosis, differential diagnosis and therapy of the diseases of a baby's gallbladder and digestive systems.