A carbon dioxide gas mist pressure bath apparatus for preventing, improving or curing an ischemic disease by contacting a carbon dioxide gas mist to a skin and a mucous membrane of a living organism directly or through a clothing, thereby to improve or promote a circulation of a blood in an ischemic region, includes a carbon dioxide gas mist-enclosing unit; a gas supply unit for supplying a carbon dioxide gas; a carbon dioxide gas mist generating and supplying unit for pulverizing and dissolving the carbon dioxide gas into a liquid, and supplying the carbon dioxide gas mist into the carbon dioxide gas mist-enclosing unit; an exhausting device for exhausting the gas in the carbon dioxide gas mist-enclosing unit to an outside thereof; and a control device for controlling a supplying amount of the carbon dioxide gas mist from the carbon dioxide gas mist generating and supplying unit.