To provide an air tube cannula mask using a gauze filter on an air supply and exhaust opening which mask solves a dangerous issue that phlegm blocks an artificial nose to cause difficulty of breathing although a patient who cannot sufficiently breathe by him-/her-self or cannot spit is treated by inserting a cannula through tracheotomy, and inserting the artificial nose.

An air supply and exhaust opening is provided on the upper part of the separate tracheal cannula mask 19, some grooves 10 are provided in a cylindrical outside circumference, gauze 6 is covered thereon, and fixed with a rubber band 7 or the like. A bottom surface 3 in the lower part is formed in a curve matched to the throat not to give sense of incompatibility such as a pain to a patient even in a long time use. Further the air tube cannula mask 19 is fixed by friction resistance by winding a rubber band 8 or the like around the neck and inserting it into a hole 5. A separation groove 16 for cutting off to separate the mask so as to match height of the mask to a shape of the cannula of the patient if need be. Thus the mask can be used by all patients.