After the concept and products of wood plastic were brought into the domestic market, they were favored by some companies and consumers, and then wood plastic products emerged in the building materials market. The main domestic wood plastic materials are divided into PE wood plastic and PVC wood plastic.① Different preparation methods: PE wood plastic products are mainly prepared by cold pushing method; The preparation of PVC wood plastic products can be divided into vacuum molding, cold extrusion and three roll suppression. ② Different raw materials: PE wood plastic is mainly made of secondary and tertiary PE recycled materials plus wood powder, calcium powder and a small amount of modifiers. PVC wood plastic is mainly made of PVC resin powder, PVC recycled materials, wood powder, stone powder and some modifiers. ③ Different properties: PE wood plastic products are heavy, with high hardness, brittleness and creep. PVC wood plastic products are light in weight, poor in hardness, good in toughness and creep. They are not as big as PE wood plastic products. ④ Different uses: PE wood plastic products mainly focus on outdoor garden construction, such as guardrails, floors, trash cans, flower beds, trays, etc. PVC wood plastic products are mainly decorative materials for indoor decoration, such as doors, floors, skirting lines, door jambs, etc. There is also a better classification of wood plastic materials - ABS wood plastic. ABS wood plastic products are easy to process, have good strength, and can also be used for wood grain effect, which is beautiful and not easy to damage.PE wood plastic material has excellent waterproof and anti-corrosion properties, high hardness, and is subject to thermal deformation and buckling, but the thickened or porous hollow structure has good effect.1. The product has a limited life span for outdoor use; It is currently used for 3-5 years; 2. The oxidation resistance and light decomposition resistance are poor. Even if the anti oxygen agent and UV reference agent are added, the effect is not ideal, and the product strength and color fastness will also be affected; 3. The appearance of the product is pure in color, without woodiness, and the appearance effect is poor.1. PVC wood plastic products can be made of new materials or old materials (while PE products made of new materials are too expensive to enter the market). It is also easier to modify, and the amount of supplement depends on the production and quality; 2. PVC can be made into low foaming wood plastic products, so the cost is lower. Co extrusion (double material multi material co extrusion or steel plastic co extrusion) can be used if it is appropriate, and the strength and wood grain feel are good; 3. PVC can be used for secondary processing of various surface patterns or paint covering UV paint, and the product is good-looking and has good color fastness; 4. The waterproof and anti-corrosion properties of PVC wood plastic products are also excellent.