A respiring nose mask system being light in weight while ensuring sealing featureat the fitting portion between a nose mask and a frame. A respiring nose mask system(11) which contacts the face surface of a user to supply respiring positive pressuregas to user's nose, and which comprises at least a nose mask (3), a frame (5)and a holding wire (8)； wherein the nose mask (3) is a tubular member having, atone opening end, a face contact portion (2) formed of an elastic member and, atthe other opening end, a frame attaching portion (4)formed of an elastic member；the frame (5) is a molding having an inner space that allows communication betweena positive pressure gas supply hose and the nose mask (3), and has a mechanism (7)connectable with the positive pressure gas supply hose and a nose mask attachingportion (6) attachable on its outer periphery with the nose mask (3)； the frameattaching portion (4) of the nose mask (3) is attached so as to cover the nose maskattaching portion (6) of the frame (5) from the external side； and at least partof the holding wire (8) is so constructed as to fasten the frame attaching portion(4) of the nose mask (3) toward the nose mask attaching portion (6) side of the frame(5).
