Abstract- In this study, effect of adding graphene and poly olefin elastomer (POE) in polypropylene matrix, in various mix time were studied. Method of fabrication samples were melt-blending samples with 0, 2, and 4 %wt of graphene, 0, 15, and 30 %wt of POE and 8,12, and 16 minute mixing time were used. For a better analysis of mechanical properties, tensile and impact tests and DSC, SEM analyses were employed. Results of tensile tests indicated that adding of POE caused reduction of elastic modulus, reduction of tensile strength, good improvement of impact strength and poor improvement of elongation. While presence of graphene caused a good improvement of modulus, without meaningful effect on tensile strength, reduction of elongation and poor improvement of impact strength. DSC analysis of samples showed that graphene and POE has no visible effect on degree of crystallinity but graphen cause temperature of crystallinity increased. SEM observations showed that byincreasing of mixing time an improvehappens on dispersion of grapheme.A reduction in size of POE particles in blending of course agglomerations of grapheme in all samples were showed that for the method of fabrication , surface area of graphene and percents of graphene in samples was not unexpected.