Wood modifying agent as well as preparation method thereof and method for modifying and treating wood through modifying agent

The invention belongs to the technical field of wood processing, and discloses a wood modifying agent capable of improving corrosion resistance of wood, a preparation method thereof and a method for modifying and treating wood through the modifying agent. The wood modifying agent comprises quercetin capable of improving the corrosion resistance of wood or natural flavone extract containing quercetin, and further comprises a catalyst and an organic solvent. The preparation method comprises the following steps: mixing quercetin or natural flavone extract containing quercetin, the catalyst and the organic solvent, and mixing uniformly at a temperature of 30-80 DEG C. After being modified by the wood modifying agent, free hydroxyl of wood generates chemical reaction with quercetin, so that thequercetin with corrosion resistance and bacteria inhibition is firmly combined inside the wood, and therefore, loss resistance is effectively improved, and corrosion resistance of wood is remarkablyimproved. 本发明属木材加工技术领域，给出种