Titanium has a wide range of applications in medical field. Titanium is close to human bones and has good biocompatibility to human tissues and no toxic side effects. Human implant is a special functional material which is closely related to human life and health. Compared with other metal materials, the advantages of using titanium and titanium alloy mainly have the following points: 1. Light weight; 2. Low elastic modulus; 3 non magnetic; 4 Non-toxic;5 corrosion resistance;6 high strength, good toughness. The amount of titanium alloy used in surgical implants is increasing at a rate of 5 to 7 percent per year. Using titanium and titanium alloy manufacture of femoral head, hip, humerus, skull, knee, elbow, shoulder joint, joint, jaw and heart valves, kidney distinguishes the membrane, blood vessel expander, plywood, prosthesis, fastening screws and other hundreds of transplanted into the body of the metal, has obtained the good effect, gave a high evaluation by the medical profession.