To provide a pocketed coil production device which produces pocketed coils containing a coil spring in each bag body continuously formed and can continuously form coil springs even when these coil springs which are attached in one mattress are different in length in the axial direction, resulting that this device can continuously form pocketed coils provided with these coil springs.

This device is provided with a process element 13 which winds a wire material 3' in a coil form to form a coil spring 3, the process element 13 is provided with a pitch setting member 14 which determines a pitch of the coil spring 3 by bringing the winding wire material 3' into contact with the process element 13, the pitch setting member 14 can be freely moved in the axial direction of the winding coil spring 3, and this moving adjusts a pitch.