A CrC coating was deposited on YT14 cemented carbide cutting tool by a CAIP (cathodic arc ion plating). The surface-interface morphologies, chemical composition, and phases of the obtained coating were analyzed with a FESEM (field mission scanning electron microscopy), EDS (energy dispersive spectrometer), and XRD (X-ray diffraction), respectively. The COFs (coefficient of frictions) and wear rates of the CrC coating at 300, 400, and 500 oC were investigated by using a high temperature wear tester, the effects of wear temperature on friction-wear properties of the CrC coating were analyzed, and the wear mechanism of CrC coating was also discussed. The results show that the Cr and C elements are uniformly distributed on the coating surface, of which the c surface microhardness is about 2200 HV. The CrC coating is primarily composed of CrC hard phase, accompanied with a small amount of Cr and Cr2C. The Cr and C elements in the coating and the W, Co, and Ti in the substrate are mutually diffused at the bonding interface, the bonding mode of CrN coating was primarily mechanical binding, accompanied with a small amount of diffusion bonding. The average COF of the coating at 300, 400, and 500 oC is 0.64, 0.63, and 0.40, respectively, the wear mechanism is abrasive wear and oxidation wear. The C element plays a role of lubrication, and the Cr2O3 film formed on the CrC coating at 500 oC has excellent oxidation resistance, improving lubrication and wear resistance of the coating. The wear mechanism of CrC coating is primarily abrasive wear, accompanied by a certain oxidation wear and adhesive wear.