An endoscopic treatment instrument is provided which includes: a flexible sheath a wire disposed inside the sheath so as to advance and retreat a restriction member which restricts a movement of the wire in the sheath to a proximal side an operating portion connected to a proximal end of the sheath a wire operating portion which is connected to a proximal end of the wire and disposed to advance and retreat relative to the operating portion a resilient member which has a first end and a second end and of which the first end is connected to the wire operating portion to expand and contract between the second end a movable member which is connected to the second end so as to be movable relative to the operating portion and a control member which is disposed in the movable member and which switches the movable member between a movable state and a fixed state relative to the operating portion.
