PURPOSE: To manufacture a fret saw blade with sawing teeth almost uniformly distributed around the blade, by performing punching to make sawing teeth on at least one side of a steel band and by twisting the band at a prescribed pitch and then quenching it.

CONSTITUTION: A band 2, which has a prescribed length and has a sawing teeth part 1 at one side edge, is manufactured by a conventional process. The band 2 is twisted at a prescribed pitch along the total length of the sawing teeth part 1. For example, the twisting pitch is such that three sawing teeth 1a are located for each round. After the twisting, the band 2 is quenched, thus manufacturing a fret saw blade 3. If sawing teeth are provided on both the side edges of a steel band by punching, a fret saw blade with a higher density of sawing teeth is obtained. The sawing teeth can be moved forth as they are doing the cutting in an arbitrary direction.