Abstract: To analyze the coordination strategy for three level supply chain with fuzzy random demand, the quantity discount coordinating model for a three level supply chain consisting of a supplier, a manufacturer and a retailer was developed, in which the order quantity and reorder point are decision variables. The cost functions of individual members and supply chain were obtained and the corresponding algorithm was developed to find the optimal solution to the model. At last, a numerical example was given to demonstrate the effectiveness of the proposed model. The numerical analysis shows that incorporating quantity discounts can reduce three level supply chain cost , and incorporating quantity discounts into both upstream and downstream of the manufacturer can significantly decrease supply chain costs compared to concentrating only on the downstream. The cost of three level supply chain with fuzzy random demand is greater than that of three level supply chain with random demand.