A remote operation-type surgery system is disclosed, which includes a multiple-degree freedom slave arm; a first operation interface configured to operate the multiple-degree freedom slave arm to make a movement of a medical instrument; a second operation interface configured to receive an operational instruction for the multiple-degree freedom slave arm and different from the first operation interface; and a controller configured to control the multiple-degree freedom slave arm, wherein the controller is configured to: determine whether or not in-operation signal is turned on; until the in-operation signal is turned on, control the multiple-degree freedom slave arm so that the multiple-degree freedom slave arm performs a movement based on the operational instruction via the second operation interface; and while the in-operation signal is turned on, control the multiple-degree freedom slave arm so that the multi-degree-of-freedom slave arm follows the movement of the first operation interface.