This research paper is focusing on the mechanical properties of polymer / Eobania vermiculata (EV) shell powder composites. The samples used in this work were prepared through melt compounding, using Polypropylene (PP) doped with Eobania vermiculata shell powder (EVSP). PP/ EVSP composites were prepared at different concentration of EVSP in PP composites at 1wt% to 5wt% by using a Plastograph-Mixer through twin-screw extruder. XRD examination did not show any change in the degree of crystallinity. It was found that the EVSP have a good dispersion inside the polymer matrix as examined by using SEM. By using the DSC, it was found that there was no significant change in the melting point of the prepared samples. On other hand, the thermal stability decreased by increasing the EVSP concentration in the PP/ EVSP composites, as seen from TGA examination. The mechanical properties have been improved by adding EVSP inside the PP matrix. Both the modulus of elasticity (ME) and the maximum stress (σp) of PP/EVSP was found to have a peak value at 3 wt%.