To provide an accessory belt remanufacturing tool 1 capable of easily reproducing a pulley winding face of a secularly worn accessory belt 2 in a state excellent in abnormal noise resistance.

In the reproducing tool 1 for reproduce a pulley winding face of an accessory belt 2, a pulley winding face is arranged on a circumferential groove 22 and a rib 23 alternately in the width direction in a waving manner, irregularities are formed on the surface of the circumferential groove 22 and the rib 23 when a tool is in a brand-new state, and irregularities are worn to be a smooth surface as the tool is used. A grinding unit 12 of a waving shape to be matched with the shape of the pulley winding face of the accessory belt 2 is provided on a holding part 11, and a large number of irregularities are formed on the surface of the grinding unit 12.