This therapeutic tool (20) includes: a support member (25) that has a tongue like support part (50) for supporting a sheet like therapeutic substance a nozzle member (23) that has a cylindrical part (30) capable of accommodating the support part (50) supporting the therapeutic substance and has an opening (34) where the support part (50) can be taken out or entered formed on a tip of the cylindrical part (30) a syringe unit (22) that applies a positive pressure to the inside of the cylindrical part (30) in order to push the therapeutic substance out of the cylindrical part (30) through the opening (34) the therapeutic substance being accommodated inside the cylindrical part (30) together with the support part (50) and water flow forming means that includes a plurality of projections (53) formed on the surface of the support part (50) so as to form a water flow on a part where the support part (50) faces the therapeutic substance when a medical water is supplied into the cylindrical part (30) with the therapeutic substance being accommodated inside the cylindrical part (30) together with the support part (50).
