a series of polypropylene(PP)/polyolefin elastomer(POE)/wollastonite were prepared by melted blending method,The influences of POE and wollastonite on the thermal and mechanical properties of the composites were studied by universal material testing machine,impact test machine,differential scanning calorimetry(DSC) and scanning electron microscope(SEM).The results show that the composites have higher tough property due to the presence of POE in the matrix.The tensile strength is improved by the addition of wollastonite.However,the crystallizing point of the composites increases while the melt point reduces.As a result,when the content of POE is 3% and wollastonite is 3%,the composites has the best thermal and mechanical properties: the impact strength is 15.4% more than that of PP and the tensile strength is 2.6% high than of PP,the crystallization temperature is also 5 ℃ above that of PP.