A mowing machine includes a cutting unit, a conveying unit for conveying grass clippings away from the cutting unit, and a packing unit including a paper-rolling module and a paper-dispensing module. The paper-rolling module defines an accommodation space for collecting grass clippings from the conveying unit, and includes scrolling axles spaced apart from each other by a gap, and movable between an opened position, where the gap has a predetermined width for allowing passage of the grass clippings from the conveying unit through the gap into the accommodation space, and a closed position, where the scrolling axles rotate to pack the grass clippings with the paper dispensed from the paper-dispensing module.
