The 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. The cover 100 for the gas mist pressure bath, in which a 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, oxygen and liquid, and the thus prepared gas mist is sealed in the cover and is directly contacted to the skin and mucous membrane of the living-body, comprises a living-body cover member 102 for covering the skin and mucous membrane of the living-body an adhesive part 103 provided on a margin of the living-body cover member 102 for adhering the cover member to the skin and mucous membrane of the living-body a gas mist supply port 104 communicating with the cover member for introducing the gas mist into the cover for the gas mist pressure bath and an outlet 105 for exhausting air, the gas mist or gas sealed in the cover 100 for the gas mist pressure bath and controlling the amounts of them and composing a flat shaped patch enabling to storing the gas mist and gas inside thereof by means of the living-body cover member 102 and the adhesive part 103.
