The present invention provides an oxidation hair dye composition that has an excellent hair dyeing effect and less burden on hair.The oxidation hair dye composition of the present invention is characterized by consisting of a first formulation containing an oxidation dye and a second formulation containing an oxidation agent, which is the composition of two formulations that are mixed before use, wherein the first formulation and/or the second formulation contains acetylated hyaluronic acid or salts thereof.