The invention pertains to the technical field of net floor prepared by utilizing waste resources to recycle, which relates to a wood-silicon-plastic net floor and a preparation method. The invention fully applies fly ash of solid waste, crop straw, wood flour and plastic scraps such as secondary polypropylene (PP), polyethylene (PE), polyvinyl chloride (PVC) and acrylonitrile-butadiene-styrene copolymer (ABS), by adding right amount of surface treating agent, flame retardant agent, anti-static agent, anti-aging agent, lubricant, plasticizing agent etc. for blending, the granulation is extruded to inject for production of a novel wood-silicon-plastic net floor having compressive strength of 22 to 36 MPa, the bending strength of 15 to 28 MPa, the impact strength 9 to 15 KJ/m<2>, the oxygen index is more than or equal to 28 and the service temperature ranges from -10 DEG C to 55 DEG C. The net floor can be applied to business building, office building, large-scale instrument repository and internet club, etc.