To make it possible to execute an automatic regulation in parallel in responding to both a temperature and a humidity, either by heating up or cooling down each part of the shoes, respectively.

Shoes with thermostatic function are provided with four Peltier effect heat exchangers 30 at four points outside the shoes either to heat up or cool down inside the shoes, with four thermal sensors 20 set around the heat exchangers 30, with a power generator 40 to generate a force mechanically along the motion, which is set on the bottom of the shoes, with a power supply circuit 50 getting a given DC from the power generator, and with a microcomputer 60 driving each heat exchanger 30 either in a heat-up or cool-down mode, based on the results derived from a comparison between the values detected by and preset to etch thermal sensor 20. The power supply circuit 50 rectifies either an AC or a pulsation from the power generator 40, which is then accumulated into a secondary battery ad the like. It is then output via a DC/DC converter 50c. The microcomputer 60 drives either to open or close a piezoelectric actuator 100, based on the values detected by the inside/outside humidity sensors 110, 120.