The invention discloses an active ingredient composition for treating alcoholic liver injury, and relates to an active ingredient composition for treating liver injury. The invention solves the problems that the conventional traditional Chinese medicines and compound decoction thereof for treating liver injury are inconvenient to use, and the dosage and safety are difficult to control. The active ingredient composition for treating the alcoholic liver injury consists of 6,7-dimethoxybenzopyran-2-one, geniposide and parietic acid. The active ingredient composition for treating the alcoholic liver injury has the advantages that: the clinical medicinal dosage is accurate, safe and effective, the active ingredient composition is convenient to use, the treatment effect is improved, medicinal materials are saved, and toxic and side effects are reduced; and the 6,7-dimethoxybenzopyran-2-one, the geniposide and the parietic acid have liver-protecting and gut-benefiting components having the advantages of quick absorption (short time to peak), slow metabolism (longer half life of medicines), higher peak concentration and larger blood concentration area under a curve, so the 6,7-dimethoxybenzopyran-2-one, the geniposide and the parietic acid can serve as preferred active ingredients. The active ingredient composition provides a basis for subsequently preparing finished pharmaceutical products in various formulations.