The invention is to provide a gas mist pressure bath system, which is possible to control the amount of gas and liquid, pressure and others, and cause a gas mist to be absorbed through a skin and mucous membrane of a human living body under an optimum condition. In the system, a mist is prepared at a density of not less than a predetermined value by pulverizing and dissolving carbon dioxide or oxygen or a mixed gas of carbon dioxide and oxygen and a liquid, and the thus prepared gas mist is directly contacted to the skin and mucous membrane of the living body, and the system comprises a gas supply means 11, a liquid supply means 21, a gas mist supply means 31 for generating and supplying the gas mist generated by storing a liquid inside thereof, and while applying supersonic vibration to the liquid, concurrently injecting a gas into the stored liquid, and a living-body cover member 41 for covering the skin and mucous membrane of the human living body and forming a space for sealing inside the gas mist supplied from the gas mist supply means, and the gas mist within the living-body cover member 41 is caused to contact the skin and mucous membrane of the living body at pressure of not less than a predetermined value.
