▎ 摘　　要

NOVELTY - Directionally preparing phenolic substance comprises pre-oxidizing lignin under action of oxidant, and performing hydrogenolysis under action of carbon-based nano-rare earth metal oxide catalyst. USE - The method is useful for directionally preparing phenolic substance. ADVANTAGE - The method enables preparing phenolic substance i.e. 2,6-dimethoxy-4-propylene-phenol, 2,6-dimethoxy-4-(2-propenyl) phenol, 4-propylene-2-methoxy-phenol, 4-propylguaiacol. The total yield of total lignin content is up to 40.8 wt.%.