Resin lenses have substituted for glass lenses to be dominant productions in eyeglasses market because of lightweight, anti-impaction and easy molding. However, the problem existed that the wear resistance of resin lenses was inferior. In order to increase the wear resistance of resin lenses, we coated DLC film on PC by the method of RF-PCVD, researched the influence of depositing power, gas concentration, time on the performance of coating, chose the optimum technological parameters. The component of coating was testified by XPS. The hardness and wear resistance were tested. The results showed that DLC films deposited on PC could improve the wear resistance of material.