The properties of solid film hbri·cant including resistance of wear，high temperature，temperature alternating and oil are researched and compared with the friction wear properties of silver coating．Experiments indicate that the graphite solid film lubricant has less wear value and lower friction CO．efficient，has good properties of resistance of wear，high temperature，temperature alternating and oil，and has loss weight properties．Therefore，the lubricant possess-es excellent lubricating and reducing friction properties．