Waterborne hinokitiol wood preservative and preparation method thereof

The invention relates to a waterborne hinokitiol wood preservative and a preparation method thereof, and is used for solving the problems that hinokitiol giving a natural corrosion resistance to wood has poor water solubility and is difficult to use. The wood preservative comprises the components according to mol ratio: 0.2-2 mol of hinokitiol, 1 mol of a solubility promoter, and 0.01-1 mol of a tannin extract (the molar ratio calculated according to the content of phenolic hydroxyl group). The wood preservative is used for processing the wood, and when the mass concentration of hinokitiol is about 1%, the resistance of the processed wood to Aspergillus niger, Penicillium citrinum, Trichoderma is up to 100%, and the fungal growth is completely inhibited; and moreover, the molding resistance of the processed wood to Coriolus versicolor and Gloeophyllum trabeum can achieve strong molding resistance level.