Four-layer composite solid wood floor

The utility model discloses a four-layer composite solid wood floor, and relates to a floor. At present, a method of decreasing the thickness of a surface board layer is adopted to reduce cost, and due to the fact that the surface board layer is thin and is not enough in intensity, the problems such as self-cracking and cracking of a cork wood core board occur when glue intensity between the surface board layer and the cork wood core board layer is poor. The four-layer composite solid wood floor comprises the surface board layer, a core board layer and a bottom board layer. The four-layer composite solid wood floor is characterized in that a reinforcement layer is arranged between the surface board layer and the core board layer, wood fibers of the surface board layer, the reinforcement layer and the bottom board layer are in the longitudinal direction, the core board layer is formed by plural short wood boards in a splicing mode, and wood fibers of the core board layer are in the vertical direction. Load can