A frame bar processing punch press having a bottom die holder holding a bottom die, and an upper die holder holding an upper die, the upper die holder being driven by a reciprocating rod to strike the upper die against the workpiece carried on the bottom die, the bottom die holder having a horizontal top plate which holds the bottom die, a horizontal bottom plate, and a flat vertical board on the middle between the horizontal top plate and the horizontal bottom plate, the flat vertical board having at least one vertical sharp edge at one side for guiding the workpiece into processing position.