To settle a resource impoverishment problem and obtain a floor board, which has a high strength, a small thermal strain and antifungal properties by a method wherein sliced veneers obtained from the surface layers of bamboos are bonded onto the top surface of a laminate, which is produced by laminatingly bonding wooden veneers or veneers, each of which is obtained by slicing bamboos in a cutting manner with a veneer lathe.

By laminatingly bonding the necessary number of veneers, each of which is obtained by slicing a portion except the skin layer of a thick-stemmed bamboo in a cutting manner with a veneer lathe into a predetermined thickness, in such a manner the fibers of bamboos intersect normal to each other, a laminated sheet 3 is obtained. By pasting flat plate-like sliced veneers 2 having a predetermined thickness gathered from the skin layers of thick-stemmed bamboos onto the surface of the laminated sheet 3, a floor board 4 is obtained. As an adhesive, one is properly adopted by being selected from the group consisting of a urea resin-based-, a melamine resin-based-, a phenolic resin-based-adhesive or the like. The surface and both the sides of each of the sliced veneers 2 are polished and finished so as to bring the adjacent sliced veneers 2 into close contact with each other and bonded without forming a gap between the adjacent portions in the pasting of the sliced veneer 2 to the surface of the laminated sheet 3. Thus, a resource impoverishment problem is settled and a floor board having a high strength, a small thermal strain and showing antifungal properties is realized.