The invention discloses a method for hydrogenation reduction of an alkenyl aromatic halogenated derivative. The method comprises the following steps that in a reaction vessel, the alkenyl aromatic halogenated derivative is dissolved in a polar proton solvent, then a catalyst is added, and a stirring reaction is conducted at the hydrogen pressure of 0.01-0.07 mpa; obtained reaction liquid is filtered and concentrated to obtain a crude product; the crude product is subjected to post-treatment to obtain an ethyl aromatic halogenated derivative as a reduction product. According to the method, thepolar proton solvent (anhydrous methanol or absolute ethyl alcohol) is adopted, platinum dioxide is added as the catalyst, alkenyl groups are thoroughly reduced under the low hydrogen pressure, aromatic ring halogen is protected, and the ethyl aromatic halogenated derivative is obtained. The method has the advantages of being mild in operation condition, high in efficiency, safe, simple in treatment, thorough in reaction, high in selectivity and the like.