To perform multicolor printing with good operability and workability by reducing area of installation.

In an offset press consisting of a printing part 1 consisting of a plate cylinder 11, a blanket cylinder 12 being brought into contact with the plate cylinder 11 and printing a sheet P and impression cylinders 13A and 13B being brought into contact with the blanket cylinder 12 and carrying the sheet P and bringing the flat paper 13 into press contact with the blanket cylinder 12, a sheet feeding part 20 for feeding the sheet P to the printing part 1 and a paper discharging part 30 for discharging the sheet P from the printing part 1, the plate cylinder 11 and the blanket cylinder 12 are provided on two stages up and down and the sheet feeding part 20 and the paper discharging part 30 are arranged at positions in the same direction to the printing part 1 and the sheet P is turned reversely at the printing part 1 and is carried.