Abstract: A blade cutting device includes a material accommodation section having a plurality of accommodation chambers for accommodating the band-shaped materials used to form blades, in such a manner as to be sorted by type; a band-shaped material machining section having a feed unit for feeding a band-shaped material pulled out from a predetermined accommodation chamber and a cutting unit for cutting the band-shaped material into a predetermined length for forming blades; and a control section for causing the material accommodation section to move so as to locate the predetermined accommodation chamber at a position facing the band-shaped material machining section.