The invention discloses a method for preparing arene by carrying out high-selectivity catalytic transfer hydrogenation on a lignin derivative. Namely, the method is a process of carrying out catalyticdeoxidation by using an aromatic oxide compound which is the richest in a lignin structure to convert the aromatic oxide compound as a raw material into unsaturated arene liquid fuel. The method disclosed by the invention is applicable to a tank reactor and can reach 94% or more of feed stock conversion and saturated alkane selectivity. Moreover, reaction conditions are mild, a catalyst preparation process is simple and low in cost, and the arene has higher activity, selectivity and high stability. More importantly, in the process of preparing the unsaturated liquid arene fuel, which is disclosed by the invention, supply of outside hydrogen is not required, and a solvent provides hydrogen atoms. The aims of saving energy and reducing cost can be fulfilled. The technical scheme of the invention provides a new approach of efficiently preparing the unsaturated arene liquid fuel in an environment without consuming the outside hydrogen by downstream products derived from renewable resources with rich reserves; the method has a very wide application prospect.