PE&PP wood-plastic floor refers to the mixing, dewaving and extrusion molding of wood-plastic composite materials in different equipment, that is, after the raw materials are mixed according to a certain formula, wood plastic particles are caused in the middle, and then extrusion processing into wood-plastic floor. At present, the two-step method is widely used. It is generally used for pelleting by conical double extruder or flat double extruder, and then extruded by conical double or single screw extruder. It is mainly used for extrusion molding of PE&PP wood plastic products such as indoor and outdoor floors, guardrail, pallet, etc.