Abstract: The NC coil spring manufacturing apparatus of this invention is an apparatus for manufacturing a variety of coil springs according to predetermined programs controlled by instruction signals transmitted from a microcomputer, comprising a pitch feed mechanism for enabling a pitch tool to start and stop quickly for and at an end turn processing position, a diameter tool feed mechanism for enabling a coiling point to shift quickly against the thrust by an element wire, a means for digitally measuring the dimensions of a wound coil spring, and a means for selecting the coil spring according to the result of such measurement, and employing a pulse motor for driving feed rollers for element wire, controlled by the computer and requiring only a simple control circuit; thus manufacturing precise and uniform coil springs efficiently.