The solid wood composite structure effectively balances the dry shrinkage and wet expansion characteristics of wood through the mutual restraint of multiple layers of base materials. Compared with pure solid wood flooring, its stability is improved by more than 30%. The surface solid wood has undergone special hardening treatment and is coated with a wear-resistant layer, providing excellent wear resistance. It can withstand frequent use in daily households, such as in living rooms, bedrooms, corridors and other areas, and is not easily worn out even after long-term stepping on it. It also has a certain degree of impact resistance. Even if heavy objects fall accidentally, it is not easy to cause deep damage to the floor, and its service life is relatively long.