Abstract: Effect of different content of Ekonol on mechanical and tribological properties of PTFE matrix composites was researched.It was found that the stress intensity and bend intensity of the composite decreases but the rigidity increases with the increase of the Ekonol content.Additionally,the tribological properties are improved effectively by filling Ekonol and the friction volume of composites with 25% Ekonol is 1.5% that of pure PTFE.