The embodiment of the utility model discloses a composite solid wood floor, which comprises a bottom plate layer, a base material layer and a face plate layer, wherein the bottom plate layer, the base material layer and the face plate layer are successively glued, and the face plate layer is formed by gluing multiple layers of hardwood rotary-cut single sheets of which the fiber directions are criss-cross. In the composite solid wood floor provided by the utility model, the surface of the base material layer is provided with the face plate layer formed by gluing the hardwood rotary-cut single sheets, and the surface hardness of the composite solid wood floor can be effectively improved. Because the face plate layer comprises the multiple layers of rotary-cut single sheets, the expansibility and the contractibility of the face plate layer are stronger, the face plate layer has small possibility of twisting and deforming, and therefore, the terrestrial heat resistance and the anti-cracking performance of the composite solid wood floor can be greatly improved.