Concrete is one of the most important building materials which is widely used due to high compressive strength and low cost. One of the disadvantages of the concrete is its tensile strength, which causes the formation of cracks. However, crack formation in concrete is inevitable. The widening of these cracks brings corrosion of the reinforcements and thus reduces the durability of the structure. On the other hand, it is difficult to repair cracks when they are visible or not available. It has already been shown that various types of fibers can increase the strain capacity, impact resistance, energy absorption, abrasion resistance, and tensile strength of concrete. Fibers prevent the spreading of cracks and increase the strength of concrete against fatigue, impact, shrinkage and thermal stress. Due to the need to use the fiber in concrete, it is quite obvious that fibers increase the tensile strength and prevent crack expansion which depends on the shape of the fiber and the percentage of fiber. Therefore, the presence of fibers improves the mechanical properties of concrete compared to the non-fibrous concrete. In this study, the applications and properties of the fibers used in concrete are discussed and the advantages of fiber concrete are expressed. In order to investigate the effect of different types of fibers on compressive strength, tensile strength and modulus of elasticity