A manipulator system is provided with: a manipulator including an elongated flexible portion, a movable portion provided at a distal end thereof, and a driving portion that is provided at a proximal end of the flexible portion and that drives the movable portion an inserted portion that includes a channel through which the manipulator is made to pass and that possesses flexibility a reciprocating portion that moves the driving portion forward and backward in a longitudinal direction of the flexible portion a movable-portion-state identifying portion that identifies a state of the movable portion a restricting portion that, when the movable portion is identified to be in a protruded state, restricts the driving portion from being moved backward any farther and a restriction releasing portion that, when the movable portion is identified to be in a retractable state, releases the restriction.
