A master manipulator for operating a driving of a slave manipulator includes a grip portion that is positioned in a clean area, gripped by an operator, and provided with a predetermined operating member； and an arm portion that is positioned in an unclean area, and with which the grip portion is directly or indirectly connected. The grip portion has a movable member that moves in conjunction with displacement of the operating member and the arm portion has a position detection portion that detects the position of the movable member.
