The utility model discloses a wood structure floor which comprises an I-shaped grille (3) and structure layers, wherein the structure layers are arranged on the I-shaped grille (3) for supporting a base layer and sequentially include a wood structure layer (1), a cement board layer (4), a steel wire mesh layer (5), a cement mortar layer (11), a non-woven fabric layer (6), an insulation board layer (8), a protection layer (12), a non-woven fabric layer (6), a cement mortar layer (11) and surface layer stones (13). Reinforcing steel bars (9) are arranged in the protection layer (12), heating pipes (10) are arranged in the protection layer (12) and fixed on the insulation board layer (8) through special clips, and the non-woven fabric layers (6) are coated with double-component polyurethane waterproof material layers. The wood structure floor can prevent water seepage, water leakage, cracks caused by expansion and contraction and damage caused by vibration, and meet requirements for diversity of residence decorative styles.