Due to wear resistance and self-lubricating properties of PTFE, the superfine polytetrafluoroethylene（PTFE）powder and polyformaldehyde（POM）were used to prepare PTFE-POM composites. The effects of PTFE fine powder content on mechanical property, processing fluidity and the wear-resisting properties of the composites were studied. Moreover, the microcosmic structure was analyzed through SEM. The results indicate that with the increase of PTFE content, the PTFE-POM compound material has better processing liquidity and wear resistance, though the mechanical properties decrease to some extent. SEM results reveal that the lower mechanical properties are caused by the partly compatibility of the PTFE powder and POM; owing to the isolation effect of PTFE powder, the processing flow of this material is remarkably improved; in the process of injection molding, the migration effect has promoted the wearability of the promising material significantly.Meanwhile, the cost of the PTFE-POM composite prepared in this paper is equal to the DuPont commercialized AF500, but the performance especially the abrasion resistance is considerably better than that of AF500.Thus, the composite material is hopeful to take place of AF500 as wearable engineering plastics structural material.