The present invention is to provide a gas mist pressure bathing cover which is simple in a structure and easy in pressurization. The gas mist pressure bathing cover 1, in which a mist (called as "gas mist" hereafter) is prepared at a density of not less than a predetermined value by pulverizing and dissolving carbon dioxide, oxygen, otherwise a mixed gas (called as "gas" hereafter) of carbon dioxide and oxygen and a liquid, and the thus prepared gas mist is contacted to the skin and mucous membrane of a living organism, comprises a living organism covering member 11 for covering the skin and mucous membrane of the living organism, a gas mist supply port 12 for introducing the gas mist into the living organism covering member and having a back-flow checking valve inside of the living organism covering member 11, a discharge port 13 for adjusting air, gas and pressure of the gas mist within the living organism covering member, and a pressure means 21 winding round an outer periphery of the living organism covering member at its opening portion in order to reduce its diameter and tighten the living organism covering member.
