Abstract: A guard for preventing occlusion of a tracheostomy tube. The guard includes a ring for slipping over the exposed end of the tracheostomy tube, thereby securing the guard to the tube, and a visor-like extension or guard which projects forwardly of and above the tube open end, thus being in a position to fend off an object which threatens to block the tube open end. The guard includes grips enabling sure grasp thereof to facilitate handling by medical personnel, as during removal and replacement of the tube. An opening is formed in the extension, so that in the event the guard rotates about the tube, and the extension is moved from its original location above the tube opening to a new location therebelow, a secondary airway is established. This will enable a patient to continue breathing, even if an object is sufficiently near the tube opening as to partially obstruct the same.