Self-lubricating polyetheretherketone(PEEK) with sweat-gland pore structure were prepared by mold-leaching and impregnating grease or oil under high temperature and vacuum conditions.The tribological behaviors were investigated under different stress,NaCl contents and lubricating greases.The results indicate the optimal pressure and mass fraction of NaCl are 100MPa and 30%,respectively.The lowest wear rate is obtained when the PEEK is impregnated with lithium-base grease,which is 2.73×10-16 m3/(N·m) with the load of 200N.At this time,the wear resistance increases by 1245 times compared with that of pure PEEK under the dry condition.Moreover,it is enhanced by 32 times compared with that of classical carbon fiber(CF) reinforced PEEK composites.It is found that pores in PEEK composites can reserve lubricated grease.The porous self-lubricating PEEK materials can form steady and continuous oil lubricating layer on the counterface,so that the friction coefficient and wear rate decrease effectively.