Air heating means (43) for heating the air in the sweat chamber (2), a mist generator (1) for generating mist, and a blower (35) for supplying the mist and circulating the air in the sweat chamber (2) And an invalid sweating promotion device (100) having a control device (61), a temperature sensor (46a) for measuring the room temperature of the sweating chamber (2), and a humidity sensor (46b) for measuring the relative humidity The control device (61) has a dew point temperature determining means (61c) for obtaining the dew point temperature td of the sweat chamber (2) from the room temperature and the relative humidity, and a body temperature setting means (61d) for setting the body temperature of the user. And the air heating means (43) and the mist generator (1) are controlled so that the dew point temperature td determined by the dew point temperature determining means (61c) is higher than the body temperature. With this configuration, it is possible to reduce the physical burden on the user and promote comfortable invalid sweating.発汗室(2)の空気を加熱する空気加熱手段(43)と、ミストを生成するミスト発生装置(1)と、ミストを供給して発汗室(2)内の空気を循環させる送風機(35)と、制御装置(61)と、を有する無効発汗促進装置(100)であって、発汗室(2)の室温を計測する温度センサ(46a)と、相対湿度を計測する湿度センサ(46b)と、を有し、制御装置(61)は、室温と相対湿度から発汗室(2)の露点温度tdを求める露点温度判定手段(61c)と、使用者の体温を設定する体温設定手段(61d)と、を備え、露点温度判定手段(61c)によって求めた露点温度tdが体温よりも高くなるように空気加熱手段(43)、およびミスト発生装置(1)を制御する。この構成では、使用者の体力的な負担を軽減して快適な無効発汗を促進することができる。