This paper uses the Optimal Operation Management (OOM) to deal with the replenishment strategies in the Distributed Supply Chain (DSC) system and simplifies the Markov Decision Process for the managers to apply efficiently. Its advantages are using simple modeling processes and the manager only needs to enter the inventory amount to obtain the demand quantity, the stationary distribution, the reorder point, the order quantity and the expected cost of the DSC system. In the numerical examples of this paper, the wrong replenishment strategies have risen 47.23%~110.02% of the expected cost on the civil gas station. In addition, we also analyzed how to distribute the stock under the condition of insufficient supply from the supplier in a non-cooperative behavior distributed supply chain system while minimizing the total cost.