The general use of the composite material depends largely on the mechanical and physical properties of these materials, so studying these properties under the influence of forces and loads in different conditions acquires great importance to know the appropriateness These properties of the workplace of these materials. Nature contains numerous instances of composite materials, such as wood and cellulose fibers. The main objective of the research is to investigate the organic additives if they are from animal or vegetable source and inorganic, mineral or non metallic additives for two different types of resin matrix, which are epoxy and polyester and presenting different studies in finding the mechanical properties of the composite materials produced as a result of mixing these materials with different additives and proportions after conducting Several mechanical tests such as tensile strength, bending strength, impact resistance, and hardness resistance, And then conclude and extract what many researchers did.