The use of nano copper powder as a solid lubricant is one of the examples of nano-material applications. Ultra-fine copper powder can be dispersed in various lubricants in an appropriate manner to form a stable suspension. This oil contains millions of ultra-fine metal powder particles per liter. They are combined with solids to form a The smooth protective layer also fills in micro scratches, which greatly reduces friction and wear, especially under heavy load, low speed and high temperature vibration conditions. At present, lubricating oil additives with nano copper powder have been sold at home and abroad.