This work presents the production of composites with a polyester matrix reinforced with bio filler beans shell (bs).The effect of the beans shell (filler) on the mechanical properties of the composite was experimentally quantified. A preliminary study was earlier carried out the shell in terms of their chemical constituents, functional group and mechanical strength. The shell beans was ground and chemically treated to enhance good bonding and adhesion to the matrix. Composites were fabricated using a hand lay-up or contact mould method for different percentage compositions of the filler. Tests, with respect to the mechanical properties (ie. tensile, Hardness, impact) were carried out. The result obtained was compared with the in forced polyester plate at 10% filler loading, it showed a 79% improvement in tensile properties and 66% increase in impact strength. It was clearly observed that the inclusion of the filler (shell) added strength to the composite. 2. The chemical characterization was carried out by x-ray fluorescent spectrometer (XFR analysis).