To provide an improved cutting method for a lithographic printing plate material for facilitating the cutting similar to a lithographic printing plate material having an aluminum support body alone, producing neither burr nor film peeling in an end part, and damaging neither a drum of an exposure device nor a cylinder of a printing machine, and also to provide a manufacturing method for a lithographic printing plate.

This cutting method for the lithographic printing plate material for use in a printing original plate cuts a support body side other than the aluminium support body of a composite support body formed by integrally sticking the aluminum support body 2 with the support body 1 other than the aluminum support body with adhesive binder, using a cutter with an acute edge.