An endoscope reprocessing tool 101 includes a connection portion 121 connected to a fluid supply source, a first fluid outlet configured to lead out a fluid, one or a plurality of stands 132 configured to place a distal end portion 41 of an endoscope 1 provided with a guide member configured to guide a treatment instrument to a concave portion 42, a first opening portion 161a and a second opening portion 161b configured to allow the distal end portion 41 to cross, and a positioning portion D configured to hit a proximal end side wall 42c of the concave portion 42 and position the distal end portion 41 when the distal end portion 41 is placed on the stands 132 such that a first opening portion side is on a proximal end and a second opening portion side is on a distal end.
