A puncture treatment tool includes a needle tube whose distal end is insertable into tissue, a cylindrical main body through which the needle tube is inserted, and a slider to which the needle tube is fixed and which is disposed so as to movable relative to the main body in the axial direction of the needle tube. The slider and the main body are configured to be capable of selecting from a first state in which the slider is movable in the axial direction relatively to the main body without rotating in the circumferential direction of the main body, or a second state in which the slider is rotatable in the circumferential direction by switching states of engagement between the slider and the main body.
