An endoscope reprocessing tool includes a connection portion connected to a fluid supply source, a first fluid outlet configured to lead out a fluid, one or a plurality of stands configured to place a distal end portion of an endoscope provided with a guide member configured to guide a treatment instrument to a concave portion, a first opening portion and a second opening portion configured to allow the distal end portion to cross, and a positioning portion configured to hit a proximal end side wall of the concave portion and position the distal end portion when the distal end portion is placed on the stands such that a first opening portion side is on a proximal end and a second opening portion side is on a distal end.
