An optical biometric device includes a light sending/receiving unit having light sending probes placed on the head of a subject and light receiving probes placed on the head a control unit for sending and receiving light to obtain M pieces of information about the amount of light received in M measurement portions an operation unit for acquiring M pieces of measurement data based on the M pieces of information a display control unit for displaying N pieces of measurement data selected from among M pieces of measurement data on a display screen and a process unit for processing at least one piece of measurement data selected from among the N measurement data. On the display screen, a measurement data image is selected so that measurement data to be processed in the process unit is determined, and the processed measurement data is displayed.
