In this study, a new kind of Ti-TiC-C gradient biomaterial has been prepared by means of plasma source ion implant-ion beam enhanced deposition (PSII-IBED). The experimental results showed that the involved components could be controlled to distribute gradually along the depth through changing ion implantation and deposition conditions. As the result, the intrinsic stress and thermal stress would be remarkably relaxed, and the adhesive strength could be greatly increased. This gradient biomaterial made with PSII-IBED can meet the needs of artificial mechanical heart valves.