Diamond tool with high hardness and wear resistance, low friction coefficient, high elastic modulus, high thermal conductivity, low thermal expansion coefficient, and non-ferrous metal affinity and other advantages. Can be used for non-metallic hard and brittle materials such as graphite, high wear-resistant materials, composite materials, high silicon aluminum and other tough non-ferrous metal materials, precision machining. Diamond tool types are numerous, significant differences in performance, different types of diamond tool structure, preparation methods and application areas are quite different.