The present article in troduces a new technique of chemical vapour deposition titanium Carbide. The technique is employed to treat the deposition of several common tool materials. The microstructures and propertuies of the deposited titanium Carbide layer are investigated by the use of metallographic observation X-ray structural analysis and X-ray spectrochemical micro analysis. This method is safe, economical and easy to adopt with conventional heat treating equipment. Applied to some dies and easily worn-off parts, it can prolong their service life to a great extent.