The invention discloses a medical trachea cannula and belongs to the technical field of medical instruments. The medical trachea cannula comprises a catheter, wherein the catheter is provided with aninlet connector and a positioning airbag; a sputum suction tube is wound on the portion, between the inlet connector and the positioning airbag, of the outer wall of the catheter, and an output end ofthe sputum suction tube is connected to an input end of a sputum suction device outside the cannula; the sputum suction tube is spirally wound on the outer wall of the catheter; a plurality of sputumsuction holes are formed in the sputum suction pipe in a trachea of a patient. The medical trachea cannula can solve the problem that since existing medical trachea cannulas cannot be used for completely removing secretions or foreign bodies of the mouth, nose and the like of the patient, infection is easily caused to the lung or an incision of the patient.