Abstract: The present invention relates to an apparatus for matching register marks and punching U-holes for a press plate which is capable of executing regular print by single register mark matching, and is composed of a press plate loading table for loading a press plate material, a pin hole positioning mechanism for supporting the lower edge of said press plate material, a press plate material centering mechanism for centering said press plate material in the horizontal direction, a register mark location reading device for reading register marks on said press plate material, a press plate material horizontal and vertical feed mechanism for adjusting said press plate material in the horizontal and vertical directions, a press plate locking device for vacuum contacting and releasing said press plate material, an automatic U-hole punching mechanism for punching a pair or two pairs of U-holes of predetermined pitches on said plate material, and an operation device for controlling the operation of each mechanism.