The present invention is to provide a cover for a gas mist pressure bath, which can cause to efficiently absorb a gas mist into a skin and mucous membrane of a living-body, exhaust air, gas or gas mist within a cover for a gas mist pressure bath, and easily control pressure inside of the cover. This is the cover 100 for taking a gas mist pressure bath, in which the mist is prepared at a density of not less than a predetermined value by pulverizing and dissolving carbon dioxide or oxygen and liquid or a mixed gas of carbon dioxide and oxygen and liquid, and the mist is sealed in the cover and directly contacted to the skin and mucous membrane of the living-body, comprises a bag shaped living-body cover member 101 for covering the skin and mucous membrane of the living body； a tightening means 102 furnished at an opening of the living-body cover member, tightening the opening to prevent diffusion of the gas mist； a gas mist supply port 103 communicating with the inside of the cover for the gas mist pressure bath for introducing the gas mist into the cover； and an outlet 104 for exhausting air, the gas mist or gas sealed in the cover for the gas mist pressure bath and controlling the amounts of them.
