The problem to be solved by the present invention is to aggregate quantitative experimental data with objectiveness based on a wealth of embodiments, and prove that the micro-bubble generating device is beneficial to health improvement. Based on these, a health improvement device is provided. In order to solve this problem, as a care bathing device of the health promotion device of the present invention, a bath 10 is provided as a water tank 1; 40 microbubble generating devices 2 are disposed on the bottom surface 11 of the bath 10; a pump P It absorbs water through the suction pipe 3 and discharges pressurized water through the discharge pipe 4 to circulate and supply the bath water and the like of the bath 10 to the aforementioned MB device 2; and the air collecting pipe 5 which supplies air to each of the aforementioned MB device 2.本發明所要解決的問題在於,基於豐富的實施例,彙整具有客觀性之定量的實驗資料等,並證明微氣泡產生裝置有益於健康增進,在這些基礎上提供一種健康增進裝置。為了解決此問題,作為本發明的健康增進裝置之照護入浴裝置,具備:浴槽10,其作為水槽1;40台的微氣泡產生裝置2,其被配置在前述浴槽10的底面11上;泵P,其經由吸水管3吸水並且藉由吐出管4來吐出加壓水,以將浴槽10的泡澡水等循環供給到前述MB裝置2中;及,集氣管5,其將空氣供給到前述各MB裝置2中。