The invention discloses a double-sided printing-down machine. The double-sided printing-down machine comprises a machine body, wherein rotating shafts are fixedly mounted on two sides of the machine body respectively; the rotating shafts are movably connected with a sealing cover; cutting sleeves are fixedly mounted on two sides of the inner wall of the machine body respectively; the cutting sleeves are movably connected with a cover plate in an inserted manner; one end of the cover plate is fixedly connected with the output end of a motor arranged outside the machine body; a first groove and a second groove are formed in the top and the bottom of the cover plate respectively. By setting the cutting sleeves and a partition, the printing-down machine is the double-sided printing-down machine, the efficiency of the printing-down machine is greatly improved, firstly an original plate to be copied is put on a first photo-sensitive plate inside the first groove, then the motor is started to drive the cover plate to rotate until the first photo-sensitive plate rotates to the lowermost position, then another original plate is put on a second photo-sensitive plate inside the second groove, a halogen lamp and a vacuum pump are opened, and the first photo-sensitive plate and the second photo-sensitive plate are printed, so that the purpose of double-sided printing is achieved, and the efficiency of the printing-down machine is improved.