A system controller 22 determines whether or not 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 for identifying each of a surgical operator, a surgical operation and an apparatus to be controlled, operation contents for respective apparatuses to be controlled that are used at a time of the surgical operation, and a recording time (S6), 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 TH, 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 TH, as one scene (S7).
