The utility novel discloses a large-scale channel slope cushion lying machine and belongs to the field of water conservancy project, and the large-scale channel slope cushion lying machine comprises four parts of material feeding, traveling and lifting, material distribution and vibration moulding. The material feeding comprises a material-feeding belt machine arranged in cannel shoulder direction. The travelling and lifting comprises guide rails paved along cannel shoulder and cannel bottom direction, travelling wheel group set on the rail, wheel cases wrapped outside the wheel group, transmission gear engaged with the wheel group, a motor linked to the gearshaft, hydraulic oil cylinder piston rods connected with the wheel cases and support beams connected with the cylinder. The material distribution part comprises a material-charging belt machine, a distribution vehicle and a control room set on the frame, and a material warehouse connected to one side of the frame; and the two ends of the frame are connected with the support beam respectively. The vibration molding part comprises an inner vibration beam and an outer vibration beam connected inside and outside the material-charging belt machine frame; the frame is equipped with a spring seat, a connection rope and a vibration beam from top down; and the up ends of the two beams are connected with a vibration motor respectively. The machine integrates a plurality of works as a whole, e.g. material feeding, material distributing, spreading and leveling, and hit formation, and has advantages of high flatness and good compactness.