To provide an improved mask for solving problems associated with a headgear required for a conventional mask for supplying respiratory gas under a positive pressure to the nose or the nose and mouth of a user, in which a strong oppressive feeling and stuffiness that the user feels when wearing the headgear are eliminated and which can prevent the slippage of the mask that may occur when the user turns over while sleeping with the mask on.

A respiration mask (1) comprises a respiration mask body (10) for supplying positive pressure respiratory gas to the nose or the nose and mouth of the user (4), a forehead fixing member (11) connected to a skeletal frame of the mask body (10) for contacting with the forehead of the user to support and fix the mask body (10), a cushion member (13) surrounding the nostril or the nose and mouth of the user (4) for keeping air-tight contact between the mask body (10) and the face of the user (4), and ear fixing members (14) for fixing the mask body (10) at the ears (41) of the user (4).