A novel way for a compressor to improve its coefficient of performance and enhance its reliability by employing nano-refrigeration lubricant oil was proposed.Onion like fullerenes(OLFs)and NiFe2O4 nano-compo-sites,modified by Span 80,were dispersed in refrigeration oil KFR22 by solid grinding(SG).Morphologies of NiFe2O4 nano-composites were characterized by using transmission electron microscope(TEM).The tribological properties as a refrigeration lubricants additive were investigated using SRV(Ⅱ),a multi-functional reciprocat-ing friction and wear tester.The results showed that the friction coefficient was decreased from 0.15 to 0.04.