A system controller determines whether a difference of recording times of two pieces of operation log data adjacent in time sequence has a time interval equal to or longer than a predetermined time period with respect to the operation log data including identification information, operation contents for respective apparatuses that are used at a time of the surgical operation, and a recording time, and when it is determined that the difference of the recording times of the two pieces of operation log data adjacent in time sequence has a time interval equal to or longer than a predetermined time period, the system controller groups a plurality of operation log data that continue in time sequence, with a difference of the recording times of the two pieces of operation log data adjacent in time sequence being shorter than the predetermined time period, as one scene.