To smoothly perform packing operation and discharging operation of a packing machine body by orderly discharging and stacking a packaged sheet at a discharged sheet stacking part.

The packaged sheet loading device has a bottom surface projecting part 130 which is provided so as to be extended to the sheet discharging direction on the center line for the width to the upper surface of the bottom plate 110, and project with a prescribed width and height on a discharged sheet stacking part 100 where the packaged sheet 900 is discharged and stacked. In addition, the packaged sheet loading device is provided with a press-hit mechanism part 200 which press-hits the packaged sheet loaded on the discharged sheet stacking part 100 from the upper part, and flattens the upward warping of the packaged sheet, and a press-hit operation control part 300 controlling this operation.