Disclosed is an oxidative hair dye composition which has excellent hair dyeing effects and causes little damage to hair. The disclosed oxidative hair dye composition is a two-agent type oxidative hair dye composition formed from a first agent which contains an oxidative dye and a second agent which contains an oxidising agent, which are mixed before use, and the composition is characterised in that the first agent and/or the second agent contain acetylated hyaluronic acid or salts of the same.