A sanitization mist shower apparatus includes a water tank that stores water, a plasma generator that causes a plasma discharge in water inside the water tank and generates reformed water, an air blower that blows pressurized air, and a mist nozzle that spouts fine mist obtained by mixing the reformed water supplied from the water tank and the pressurized air supplied from the air blower. A liquid pressure of the reformed water supplied to the mist nozzle and air pressure of the pressurized air are substantially the same as each other.