A manipulator includes an operation portion, wherein forceps are opened and closed, when a first forceps pulley of a first forceps piece and a second forceps pulley of a second forceps piece rotate in opposite directions to each other, a direction of the forceps is changed when both pulleys rotate in the same direction, and a direction of the forceps can be changed about a P axis (pitch axis)； a first driving portion comprising a left driving pulley and a right driving pulley slidably movable along a Z axis (main axis) direction； and an endless loop-shaped wire rope.
