The present disclosure concerns the reduction of medical mistakes, for instance, when a surgical site is mistaken for another part. An operation support system includes a model image forming unit which applies a mark (M) to a surgery site of a corresponding surgical position in accordance with inputted surgery information including an operative procedure, the side of the surgery and the surgical position to form a human body model image and a display control unit which displays the human body model image formed by the model image forming unit on a display unit.