Rubber is produced excessively worldwide every year. It cannot be discharge off easily in the environment as its decomposition takes much time and also produces environmental pollution. In such a case, the reuse of rubber would be a better choice. In order to reuse rubber wastes, it was added to concrete as aggregate and its different properties like compressive strength, tensile strength, ductility, etc. were investigated and compared with ordinary concrete. Results show an improving in the ductility, but the compressive and tensile strength were decreased. Previous researches investigated the effect of using steel fibers on the mechanical properties of concrete. The results show an improving trend when compared with ordinary concrete. This paper presents a review of the recent researches carried out on investigating the effect of using crumb rubber and steel fibers on concrete.