The present invention is to provide a gas mist pressure bathing system enabling to cause a gas mist to be absorbed into the skin and the mucous membrane of the living organism under an optimum condition of controlling the amounts of gas and liquid. The system comprises a gas supply means 11 for supplying carbon dioxide, oxygen, otherwise a mixed gas of carbon dioxide, oxygen or air at a density of not less than a predetermined value, a liquid supply means 21, a gas mist supply means 31 which sucks up the liquid by negative pressure owing to gas flow for causing the liquid to collide with the gas for generating the gas mist prepared by pulverizing and dissolving the gas and the liquid, a living organism covering member 51 which forms a space for sealing inside the gas mist supplied from the gas mist supply means 31, wherein a gas mist supplying pressure regulating means 41 provided for controlling supplying pressure of the gas mist in such a manner of changing communicating conditions between the inside and the outside of the gas mist supply means 31 as well as regulating an amount of taking in outside air by changing.
