To provide a reaming tool capable of reducing operation costs, and a reusing method for the reaming tool.

The reaming tool 1 is provided with a body section 2 and a plurality of blade sections 3a-3d. In the body section 2, a plurality of grooves 5a-5d having their bottom surfaces tapered in the axial direction are provided in the periphery with distances in the circumferential direction. The plurality of blade sections 3a-3d are provided with a plurality of abrasive particles fixed in their outside end surfaces, and are detachably attached to the grooves 5a-5d respectively so that their inside end surfaces are contacted with the bottom surfaces of the grooves 5a-5d.