The future of the world is going to be converting materials from ferrous and non-ferrous materials to composite materials. And most of the applications are used to utilize natural fibers compared to artificial fibers. Because the natural fiber has good strength and easily available. And also, natural fibers are non-corrosive, less in weight, nontoxic and nonabrasive. The natural fiber was used in heavy duty applications like ropes, roofs, packing materials and home applications. In this study, an epoxy based composite with sisal and banana fiber reinforcement was considered. Used to strengthen epoxy resin, banana fiber and sisal fiber are used to make composite materials. For the research work, three ratio of composite specimens have been developed. The ratio that has been taken is sisal 40% with banana 60%, sisal 50% with banana 50%, and sisal 60% with banana 40%. The different weight percentages of banana and sisal fiber added to the epoxy resin affect the mechanical behavior of the composites is investigated.