The invention relates to the technical field of bag making machines, and specifically relates to a novel discharging device of a bag making machine. The novel discharging device comprises a discharging box and a discharging roller, wherein the discharging box is of a hollow structure; a first guide roller, a second guide roller and the discharging roller are sequentially arranged in the discharging box in the moving direction of a plastic bag; a cutting mechanism is mounted between the second guide roller and the discharging roller; the discharging roller is rotationally mounted at the bottomof the discharging box through an adjusting frame; the adjusting frame comprises a support, a sleeve and a sector gear; the upper end of the support is rotationally connected with the discharging roller; the lower end of the support is mounted in the sleeve in a sliding manner and fixedly connected with the sleeve through a telescopic spring; a rack is fixedly mounted on the outer side of the support; and the sector gear is rotationally mounted in the discharging box through a mounting frame and engaged with the rack. According to the novel discharging device, after the cutting mechanism cutsthe plastic bag, the plastic bag is forced to be separated from the discharging roller, and the plastic bag is prevented from being heated and adhering to the discharging roller.