Abstract: Ultra high molecular weight polyethylene (UHMWPE) and its composites filled with glass beads were prepared by heat compression molding. The mechanical properties, Rockwell hardness, phases, morphologies, Vicat softening temperature, melting points and coefficient of linear expansion of the composites were examined, and their friction and wear resistant performances were tested by an MRH-3 high speed friction and wear tester and a water-sand slurry apparatus with water bath. It is found that the resulting blends exhibited better properties in the hardness, Vicat softening temperature, melting point and the glass transition temperature, which led to the lower coefficient of friction and the less wear of the composites. The Vicat softening temperature was enhanced by 12.5% and the wear mass was reduced by 62%. It is also found that the content of glass beads between 5% and 20% was the optimal loading, however, the mechanical properties of UHMWPE composites presented a reduction with increasing amount of the filler.