The invention discloses a novel rotary dryer suitable for garbage materials. The novel rotary dryer suitable for the garbage materials comprises a barrel, a barrel driving device, a material inlet assembly and a material outlet assembly, wherein a plurality of elongated lifting plates, a plurality of trapezoidal lifting plates and a plurality of pushing lifting plates are arranged in the barrel; the elongated lifting plates are distributed uniformly along the circumference; the length direction of each elongated lifting plate is set in the axial direction of the barrel; a long side of each elongated lifting plate is welded with the inner side of the barrel; wide sides of the trapezoidal lifting plates are connected to the other long sides of the elongated lifting plates at intervals; the pushing lifting plates are arranged in the axial direction of the barrel at intervals; and an included angle is formed between the plane of each pushing lifting plate and the axial direction of the barrel. The lifting efficiency is improved, and the materials are raised fully; the materials are uniformly dispersed to a cross section of the rotating barrel, so that the materials are in full contact with smoke, and the heat transfer efficiency is improved; by the pushing lifting plates, the pushing angle is changed, the material advancing speed is also changed, the retention time is adjusted, and the materials are dried fully; and by a hot smoke supplementing device, the temperature of the materials in a middle rear part of the rotating barrel is increased, and therefore, the drying effect is improved.