To provide a digital printing machine being enough to run with few plate-making means, and easily corresponding to size and multicolor.

Each first printing unit and second printing unit includes a printing plate mountable with printing areas having two different colors in its circumferential surface respectively, and every when a form cylinder 15 rotates, printing is effected for respective two colors. Between impression cylinders 15 of each printing unit, this apparatus is formed such that printing paper is delivered by an intermediate conveyance part 4 comprising the paper ejection drum 17 of the first printing unit 1, three-delivery drums 40, and a paper feeding drum 16 of the second printing unit. The intermediate conveyance part 4 works to convey printing paper every intermittent rotation of the impression drum 15.