Abstract Broadband Dielectric Spectroscopy (BDS) is employed in order to investigate relaxation phenomena occurring in polyvinylchloride based microcomposites, reinforced by 2vol.% graphites. Samples were examined under identical conditions in a wide frequency and temperature range. Experimental data analyzed in terms of electric modulus formalism. M’ and M” values increased with frequency up to 1.105Hz. The peaks in M’ and M” values were developed at the same frequency range, indicating the appearance of the relaxation process in pure PVC. The real part of complex modules of pure PVC show a plateau with increasing temperature up to 80℃ follows by a sharp decrease near glass transition temperature. The M’ of the composites shows a plateau in low temperature region (up to 40℃) and a broad peak in temperature range of 40-115℃. Above 850c, the real part of complex modulus decreases for all specimens range 115-‘150℃. Two relaxation process, located in the low (70-80℃) and relatively higher (130℃) temperature range are recorded. The intensity of the decreases with the increase of Gr content. The second maximum of the imaginary part of electric modulus for all the specimens is observed at 130℃ and does not depend on the Gr content.