Abstract: The new materials in the present paper have abundant skull and mandible specimens, and try improve a deeper recognition to Ch. wimani for us. These new specimens show that Ch. wimani has a relatively particular position in the genus Chilotherium. It has very little separated parietal crests, a strongly concave cranial dorsal profile, well-developed supraorbital tubercles，and a high occipital surface, which indicate that Ch. wimani is the most primitive one in the known species of the genus Chilotherium.