In the competitive world, the success of any business depends on the performance of its supply chain. Many researchers have investigated the Supply Chain Management (SCM) in recent decades. Traditionally, every echelon in a supply chain is assumed to operate independently. But with widening the need to suppliers, business firms need to cooperate with their trading partners for success. Today, understanding how manager's decisions impact the global performance of the supply chain is a challenging topic in this field. As a result of dynamic nature of the supply chain, dynamic modeling is important and system dynamics is a successful tool to understand the dynamic behavior of such a complex system. The objective of this thesis is a dynamic approach to supply chain with the case study of Isfahan meat supply chain. Production and distribution model introduced by Forrster has been used in this thesis and has been extended to investigate the effect sof initial material supply. In fact, the purpose is the dynamic modeling of this large supply chain and to test and analysis some scenarios on the model, to develop a good insight to current managerial problems and their solutions. The study shows current high meat supply as the result of last year drought, causes a decrease in the level of available cattle in future. Decline in the cattle level will contract the capacity of meat production and so the price will increase. Some scenarios in relation to studying bullwhip effect with the increase in demand and decrease of the system delays have been defined and tested in this model. This can be concluded that decrease in delays reduce bullwhip effect. Capacity augmentation of factory also has been analyzed as a scenario.