TiC films on W18Cr4V steel was prepared by multi-arc ion plating technique,and the structure and composition of surface and interface of the TiC film were analyzed by FSEM, spectrometer and XRD.The wear resistance of the TiC films was comparative discussed by Micro-wear Miriam.The results show that the microhardness of TiC films on the steel was 2900 HV0.05 with dense surface; a pseudo-diffusion layer was existed between the film and substrate.The wear resistance of TiC film is better than TiN films as a result of higher hardness and lower coefficient of friction of TiC films.