Titanium and its alloys as surgical implant materials have many advantages, such as low density, high strength, good toughness, good biocompatibility, non-toxic, low elastic modulus, good corrosion resistance, low X-ray absorption, and so on, and therefore occupy an increasingly important position in medical metal materials. Titanium and its alloy can be used for human hard tissue repair and replacement, or for cardiovascular and soft tissue repair and artificial organ manufacturing, is a special functional material closely related to human life and health. At present, it has become the preferred metal material for replacement or repair products such as artificial joint, artificial bone, broken bone fixator, spinal corrective rod, bone marrow nail, artificial heart valve, dental implant and skull. The world population is nearly 6.5 billion, and the global aging problem is very serious. According to F&S, the global orthopedic implant market has experienced a compound growth rate of 10.4% in the past five years, and is expected to reach 27.7 billion us dollars by 2015, while the Chinese orthopedic implant market will grow to 16.6 billion yuan, with an annual compound growth rate of 18.1%.Therefore, as the preferred material of medical metal materials, titanium and its alloy have very strong market demand in the future. Therefore, it is of great significance to increase the r&d and application promotion of medical titanium and its alloy materials in China.