To provide a body temperature regulator capable of putting a human to sleep in a short time.SOLUTION: A body temperature regulator 10 for regulating a body temperature of a human body BD includes a heater 30 for heating in the mounted state on the human body BD, and a heater control unit 51 for regulating a heating value of the heater 30. The heater control unit 51 is constituted so as to perform a sleep control which is a control for regulating the heating value of the heater 30 so that a body temperature is lowered, when a sleeping time set beforehand comes.SELECTED DRAWING: Figure 2
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