To provide a wooden facing flooring material composed of a low- pressure melamine facing plate hardly causing scratches because of its high abrasion resistance and superior in workability.

A flooring material body 1 is formed of a melamine facing plate by setting a wooden fiber board having a uniform physical property across the whole as a base material and providing a laminated layer of melamine resin impregnated paper on the front/rear faces of the base material 11, and a pattern paper 12 and a balance paper 13 by integration; a plurality of recessed grooves 4 reaching the depth where the residual thickness of the flooring material body 1 becomes 1-3 mm are cut in parallel mutually in the short side, female/male tongue-and-groove parts 2 are provided in the four-directional end faces, and four-side ridge corners are treated by thread chamfering 3 composed of a gentle slope or a projecting circular arc face so as to provide the flexibility to the rear face of the flooring material body 1 and accurately perform a tongue-and-groove joint process and the chamfering process 3.