Method for preparing natural vanillin by utilizing eugenol

The invention discloses a method for preparing natural vanillin by utilizing eugenol. The method comprises the following steps of preparing isoeugenol sylvine, preparing an intermediate product vanillin sylvine, and preparing and purifying the target product vanillin. The reaction is stable, the condition is more moderate compared with the traditional process, the yield is higher, the product quality is better, edible spice is widely used for the strong milky fragrance of the target product, the mass production is easy to realize, and the pollution is little in the production process.