To make a bathing person feel satisfied throughout one year even if the season or an atmospheric temperature change by making an operation time and an operation output automatically change on the basis of the temperature environmental factor such as the season, hot water temperature and atmospheric temperature in a system for promoting a hyperthermic effect of bathing which enhances the hyperthermic effect on the bathing person by generating water streams and fine bubbles in a bathtub for a predetermined time.

The system for promoting a hyperthermic effect of bathing is provided with a water stream generating system for generating water streams containing bubbles and water stream containing no bubbles in the bathtub filled with hot water so as to promote the hyperthermic effect given to the bathing person, and an electronic control unit 7. The water stream generating system is provided with a pump P or a motor which becomes a power source. The electronic control unit 7 is constituted to control the operation output and operation time of the power source P so as to adjust the generation amounts of the bubbles and water streams on the basis of the atmospheric temperature information, hot water temperature information and/or season information.