A soft material quality wood material strengthening board is flat plate. It is characterized by: it has natural grains of raw wood, its color is the mixture color of raw wood self color, charring color and resin color, the density is 450-720kg / m<3>, surface hardness is 25-65MPa, vertical MOR is 35 - 90MPa, vertical elastic modulus is 1~10GPa, resin content (solid content) is 3% - 10%. The strengthening board can be produced floors or furniture raw materials after preliminary working, drying, rough planing, heating, resin soaking, hot pressing, placing in normal condition and fine finishing. The invention produces the strengthening board using soft material as raw material, covers the shortage of hardwood product raw materials, it increases the use-value of soft material, while meets the popular consumer demand of liking wood, and provides new materials for hardwood furniture and flooring manufacturing industry.