A thermoregulation device which is adapted to be used for covering part of a living body, includes: a first sheet which is higher in thermal conductivity than cotton cloth a second sheet which is higher in heat insulating and retaining properties than cotton cloth and a gas passage which is formed between the first sheet and the second sheet. A first opening which communicates with the gas passage is formed in one of the first sheet and the second sheet. A second opening which communicates with the gas passage is formed in one of the first sheet and the second sheet. A gas which is introduced through the first opening is discharged from the second opening via the gas passage.
