The co-extrusion material product is to extrude a layer of macromolecule material outside the plastic floor core to achieve the effect of surface wrapping, which greatly improves the weather resistance and aging resistance of the material. It fundamentally solves a series of problems such as fracture, bending, thermal expansion and contraction, deformation and cracking, fading and mildew, which often occur in the outdoor application of conventional products, and enhances the service life of the product. The formation mechanism of imitating wood grain effect is that it carries different color wood grain master batches and background particles, and has different plasticizing speed and melt fluidity. After plasticizing in an appropriate process in the extruder, the fluidity difference of each component is fully utilized to form different shades of rheology on the surface of the product. Through the appropriate color matching, the product surface has the texture of imitating wood or stone.