The invention is to provide a pressurized gas mist bathing system, ensuring hygiene and reduction in costs, by making only one part of the system disposable. This system comprises a gas supply means 10 a gas mist generating means 30 which has a portion connecting the gas supply means 10, a liquid storage of storing a liquid, a nozzle, a liquid suction pipe of sending the liquid to the tip of the nozzle, a collision member of colliding the liquid blown up by a gas stream from the nozzle therewith, a cylindrical gas inlet supplied with the gas and leading the gas till the upper portion of the nozzle, and a donut-shaped gas mist outlet collecting and discharging the gas mist around the periphery of the gas inlet and a pressurized living organism bathing cover 50 for covering the skin and the mucous membrane of a living organism and formed with a space for sealing inside the gas mist from the gas mist generating means and in the gas mist generating means 30, at least the liquid storage is displaceable and replaced by another, so that liquid storage is made disposable.