Objective To study the Zr/ WC coating character and behavior on the surface of TA2 by electro-spark deposition. Methods The microstructure, the chemical composition distribution, the residual stress, the micro-hardness distribution and the relative wear resistance were received by canning electron micro-scopy (SEM), energy dispersion spectrum (EDX), X-ray stress analyser, hardness meter and wear tester. Results The deposited layer was continuous and uniform. The thickness was about 50 μm to 80 μm, the coating surface was not flat, there were a lot of small pits and adhesion. The coating section had a small amount of porosity and crack. Mutual diffusion of main elements happened between coating surface and substrate. The obtained coating was a composite coating by metallurgical reaction between Ti, Zr, and WC. Residual stresses existed in the coating and the residual stress of the property can be controlled by changing the technological parameters. The micro-hardness of the coating surface was about 4 times as that of the substrate, the wear quality of Zr / WC composite coating was much less than that of TA2, εw = 4. 1, the relative wear resistance of the deposited layer was increased by 3. 1 times, the wear resistance improved significantly. Conclusion The performance of the substrate can be improved by TA2 and Zr / WC coating.