To provide a ladder cord manufacturing apparatus which realises an easy manufacturing of the ladder cord including a plurality of pitch differences of a weft on each warp of the ladder cord.

The ladder cord manufacturing apparatus comprises a first die 1 for forming a pitch of a weft 5 on one warp of a ladder cord 3 and a second die 2 for forming a pitch of the weft 5 on the other warp of the ladder cord 3 independently. The first die 1 comprises a roller part 6 for transferring the ladder cord 3 by engaging with the weft 5 of the ladder cord 3, a forming tooth die 7 formed on the roller part 6 for forming a pitch on the one warp 5, and a heating means 8 for heating the one warp side of the forming tooth die 7. The second die 2 comprises a roller part 9 for transferring the ladder cord 3 by engaging with the weft 5 of the ladder cord 3, a forming tooth die 10 formed on the roller part 9 for forming a pitch on the other warp, and a heating means 11 for heating the other warp side of the forming tooth die 10.