A lithographic printing plate printer includes: an original-film loading section; a lithographic printing plate loading section; a printing surface plate on which an original film is brought into close contact with a lithographic printing plate; a light source for printing an image on the original film onto the lithographic printing plate on the printing surface plate; a punch-hole punching unit for punching a punch hole in the original film; an original film transporting unit for taking out the original film in the original-film loading section and transporting it onto the printing surface plate via the punch-hole punching means; and a lithographic printing plate transporting unit for taking out the lithographic printing plate in the lithographic printing plate loading section and transporting it onto the printing surface plate.