Provided is a living organism information measurement device which users can easily and reliably operate. A living organism information measurement device for acquiring living organism information and generating measurement data relating to the information is provided with a device body, and a panel detachably attached to the device body. The device body comprises a control unit which executes a plurality of functions of the device body, a living organism information measurement unit which is connected to the control unit and generates the measurement data, and a first communication unit connected to the control unit. The panel comprises a second communication unit including a memory storing predetermined information. When the panel is attached to the device body, the first communication unit receives the predetermined information from the second communication unit. The control unit selects and executes a function corresponding to the received predetermined information among the plurality of functions.