The utility model belongs to the technical field of printing equipment, and particularly relates to intermittent printing equipment which comprises a shell, a printing roller and two rectangular plates and further comprises a sliding groove, the sliding groove is formed in the shell, two sliding strips are installed in the sliding groove in a sliding mode, electric push rods are fixedly installed at the bottoms of the two sliding strips respectively, and the electric push rods are arranged on the shell. A fixing strip and a pressing strip are fixedly mounted at the telescopic ends of the two electric push rods correspondingly, and the printing roller is rotationally mounted in the fixing strip. The hose is fixedly installed at one end of the pressing strip, the upper end of the hose penetrates through the top of the shell, extends to the outside and is fixedly provided with a collecting box, the collecting box is fixedly connected with the shell, a fixing frame is installed in the collecting box in an inserted mode, and a dust filtering net is fixedly installed in the fixing frame; the portable paper bag compressing device can compress a portable paper bag to ensure that the portable paper bag does not displace, meanwhile, the compressing effect is good, meanwhile, dust on the top of the portable paper bag can be cleaned, the dust cannot be directly discharged to the outside, and the environment cannot be polluted.