PROBLEM TO BE SOLVED: To provide a mist sauna apparatus for suppressing the propagation of mold inside a bathroom.SOLUTION: The mist sauna apparatus performs a mist spray operation in the bathroom by an operation control direction circuit 4 as an operation control means, in which steam obtained by heating hot water of 40-60°C to vaporize is sent into the bathroom by a blower 108 to control air inside the bathroom to have a temperature and humidity at which mold is not generated, that are 40°C or more and 50°C or less and 99%RH or more and 100%RH or less, and the temperature of bathroom interior wall surfaces to be a temperature at which mold is not generated, that is 40°C or more and 50°C or less, thereby suppressing the propagation of mold.COPYRIGHT: (C)2013,JPO&INPIT【課題】浴室内のカビの繁殖を抑制するミストサウナ装置を提供することを目的とする。【解決手段】運転制御手段としての運転制御指示回路4により、浴室内にミスト噴霧運転を行い、40℃~60℃の温水を加熱し気化した水蒸気を送風機108により浴室内に送ることで、浴室内壁面および浴室内の空気をカビの発生しない温湿度の40℃以上50℃以下、99%RH以上100%RH以下に、浴室内壁面温度をカビの発生しない浴室内壁面温度の40℃以上50℃以下にすることにより、カビの繁殖を抑制するミストサウナ装置が得られる。【選択図】図1