Wood-plastic prefabricated slab and manufacturing method thereof

The invention discloses a wood-plastic prefabricated slab and a manufacturing method thereof. The wood-plastic prefabricated slab comprises a plurality of raw bamboos and wood-plastic materials wrapping the raw bamboos. The manufacturing method of the wood-plastic prefabricated slab mainly includes the steps that (1) the raw bamboos are subjected to outer green removal and then bundled into a row to be laid, and the row of raw bamboos is placed in a mold to be preheated; (2) plant powder, plastic and a coupling agent are mixed in the mass ratio of 0.11-1 to 1 to 0.033-0.12, and a product is heated to obtain the wood-plastic materials; and (3) the wood-plastic materials are injected into the mold and extruded to be molded, and after the mold is cooled, the wood-plastic prefabricated slab is obtained through demolding. The wood-plastic prefabricated slab and the manufacturing method thereof have the advantages that the cross sectional moment of inertia of the manufactured wood-plastic prefabricated slab is larg