Abstract: Glass fibers reinforced polyamide 6 / montmorillonite composites were prepared via screw extruding method. Their mechanical properties were measured by an electronic all-powerful tester. It was observed that the tensile and impact strengths of the composites increased with increasing content of glass fiber. At a same loading, the strengths based on 12 mm glass fiber were higher than those on 6 mm glass fiber. When the content of glass fibers was 10% (12 mm)，the tensile strength and impact strength of the composites respectively improved 17.4 % and 84.1 % compared with those of the plain polyamide 6 / montmorillonite composites.

Key words: polyamide 6, screw extrudering, glass fiber, montmorillonite, mechanics property