The treatment of hydrogen-free carburization is applied on commercial purity titanium by the technology of equipotential hollow-cathode glow discharge under the commercial purity titanium phase transition temperature. The morphology, distribution of composition, phase composition are analyzed by the scanning electron microscope, the energy dispersive spectrometer, the X-ray diffraction, respectively; the tribology capability of the sample is studied by the friction and wear tester; the corrosion resistance of the samples in 3.5% NaCl solution is studied under the normal temperature static condition by using the electrochemical workstation. The results have shown that the high hardness alloy layer is formed on the commercial purity titanium surface by the treatment of hydrogen-free caburization, and the maximum thickness of the carburized layer is 7.5 μm; and the maximum hardness is 1298 HV0.2, which is 5.43 times that of the matrix. Due to the improved surface hardness, the wear resistance on the surface of the sample is increased significantly, and the average friction coefficient is only 0.312, which is obviously decreased than 0.746 that of the original sample. The minimum annual corrosion rate of the samples is 1/11 of the original sample in 3.5 mol/L NaCl solution. So the wear resistance and corrosion resistance are obviously improved in the premise of keeping the mechanics properties of the substrate.