The utility model discloses a fibre inner reinforced wood -plastic product, including the body with set up in the joint recess of the body left and right sides, the body lower surface is equipped witha plurality of recesses, forms the supporting legs between two adjacent recesses, the body is inside distribute have with the fiber reinforced material of this external surface profile looks adaptation. Fibre inner reinforced wood -plastic product's structural design considers that the single face uses, can material for the minimize, keep intensity simultaneously, the material materials partly can reduce by 20~40%, adopt flat support, and because of product corner position is weak dot OR stress point, fiber reinforced material is equipped with a plurality of " support frames ", in the embedding supporting legs, can further improve the sheet surface's the bearing capacity and the bulk strength of product, simultaneously, resistance to deformation and anti contractility also further strengthen.