WPC is a kind of modified thermoplastic material which is made of wood fibre or plant fibre, which is filled and strengthened by heat pressure composite and melt extrusion. In recent years, with the depletion of global resources, the awareness of social environmental protection has been increasing, and higher requirements have been put forward for the application of wood and petrochemical products. Under such a background, wood-plastic composite materials can not only give full play to the advantages of various components of the materials, but also overcome the limitations caused by low wood strength, high variability and low elastic modulus of organic materials, but also make full use of waste wood and plastics to reduce environmental pollution. At present, the products that increase the added value of materials are getting more and more attention. the research focus is mainly on the composite materials made from thermoplastic plastics (PE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS), wood powder, plant straw powder, plant plant plant species shell, etc. From the point of view of production materials, the raw materials of wood-plastic composite materials can use various kinds of waste plastics, waste wood and agricultural residues. Therefore, the development and wide application of wood-plastic composite materials can help reduce the pollution of plastic waste and reduce the environmental pollution caused by agricultural waste incineration. The production and use of wood-plastic composite materials will not release volatile substances that harm human health to the surrounding environment. The materials themselves can be recycled and used. Therefore, the research on the preparation and processing of wood-plastic composite materials has great economic and environmental benefits.