To provide an apparatus for manufacturing a toothed resin belt causing no flaking of zinc plating covering a steel core wire, without changing a comb.

The apparatus for manufacturing the toothed resin belt incldues at least one toothed molding wheel; a spinning mechanism 8 winding the core wire 3 around a toothed mold; a guide means 6 covering the toothed mold from the outer periphery to form a mold cavity having a void between itself and a tooth form; and a push-out means 7 forming the toothed belt 2 along the core wire 3 while injecting molten resin in the mold cavity. The apparatus further includes a driving means for the toothed molding wheel 4, and a comb 5 covered with metal with a Brinell hardness of 15HB-35HB, for aligning the core wire, freely interposingly at the toothed molding wheel 4.