PROBLEM TO BE SOLVED: To provide a device and the like for measuring human activity amount, the device calculating an intensity of human physical activity and the like by using a Doppler sensor.SOLUTION: The device for measuring human activity amount includes: a transmitter； a receiver； and a processor for obtaining frequency information and amplitude information of input signals obtained by receiving by the receiver reflection waves related to transmission waves sent from the transmitter, and on the basis of information associating the obtained frequency information and amplitude information with intensity of physical activity corresponding to the frequency information and amplitude information, for calculating the intensity of physical activity of the person who has reflected the transmission waves.
