The strategic supply chain network which is a key factor influencing the efficiency of tactical operations in supply chain network, to move products from manufacturer to warehouses, and final to retailers or end customers with satisfying the request quantity while optimize the overall profitability across the supply chain, is critical. Hence, the distribution reliability assessment plays an important and effective role in the supply chain network. However, little research has investigated the distribution reliability in supply chain network. In this paper, the reliability of three echelon supply chain is precisely evaluated by the multistate flow network (MFN) algorithm. In addition, a benchmark of supply chain reliability network to evaluate the applicability and usefulness of the MFN algorithm applied to evaluate the distribution reliability is conducted.