An endoscopic treatment tool of the present invention includes: a sheath (3) in which a lumen is formed an elongated shaft (4) which is inserted into the lumen, is configured to protrude and retract from a distal end of the sheath (3), and includes an insertion passage (41) a stylet (5) which is disposed in the insertion passage (41) to be movable relative to the elongated shaft (4) an implant (2) which includes at a proximal end portion thereof a coupling part (23) connected to a distal end of the stylet (5) and is configured to protrude and retract from the distal end of the elongated shaft (4), the distal end of the stylet (5) and the coupling part (23) being connected to each other in the insertion passage (41) and a manipulation part (6) which is provided at a proximal end side of the sheath (3) and at which a proximal end side of the stylet (5) is disposed. The implant (2) is held in a state in which the coupling part (23) is located inside the insertion passage (41) and part of the implant is exposed from the elongated shaft (4).
