Today, concrete is one of the most widely used construction materials. Concrete enjoys several advantages over wood and steel and other construction materials such as flexibility in shaping, fire resistance, durability and ease of production and finally cheaper and more economical. But along with these advantages, there are also disadvantages such as heavy weight, low tensile strength and high shrinkage. In general, shrinkage is considered as the commonest cause of cracking. In structural components which their deformation has been limited if related controls are not performed, contraction causes tension and as a result crack so that this can lead to incompetency of service, durability and shear strength. Research results have indicated that the ductility of concrete using fiber can be greatly increased. Additionally, an overall improvement in application of fiber is increase in tensile flexural and shear strength. Concrete cracking can be delayed and controlled with application of fibers in concrete Subsequently decrease shrinkage. Compressive strength of concrete is increased by adding some kind of fibers to concrete mixtures. This study investigates the application of Barchip and polypropylene fibers in concrete. Also In this thesis, it is aimed to proceed to investigate experimentally and present an analytical model of drying shrinkage of concrete contains these types of fibers and the factors effective on it. In this study, concrete mixtures with 0.4,0.6 and 0.8 volume percent of HPP fiber and polypropylene fibers with two longs (6 and 12 mm) were Provided. Changes in shrinkage, compressive strength and tensile strength were measured relative to the control sample. To measure of drying shrinkage of concrete, 285×75×75 mm prism specimens were used based on ASTM C157 standard for 33 mixed design. The obtained results showed that the polypropylene fibers were not effective in compressive strength, tensile strength and drying shrinkage compare to Barchip fibers. Also By increase of content of polypropylene fibers to 0.8% drying shrinkage, compressive strength and tensile strength decreases, but by increase of content of Barchip fibers compressive strength and tensile strength increases. To investigate effect of water to cement ratio, amount of this parameter was selected 0.45, 0.50 and 0.55. The more increase of water to cement ratio of concrete, the more decrease of compressive strength and tensile strength and also the more increase of drying shrinkage. Increase of drying shrinkage rate in lower water to cement ratio is more obvious. At last, according to the proposed models for ordinary concrete and experimental results, a model is presented to predict drying shrinkage in concretes of this research. Keywords : fiber reinforced concrete, polypropylene, Barchip, drying shrinkage, analytical modeling of shrinkage.