摘要：To encourage retailers to form cooperative alliances to jointly replenish inventory,considering that the supplier provides a flexible lead time and quantity discount to retailers,a model of average total cost per unit time of periodic joint replenishment is constructed,and an approximate algorithm,which can satisfy the requirement of any given precision,is *** cost allocation rule in the core of the joint replenishment game is designed based on the cooperative game *** numerical experiment results show that the proposed algorithm can quickly solve the joint replenishment problem when the item number is not greater than *** retailer's cost saving rate is always greater than 0,and it increases with the increase in quantity discount and fixed cost after adopting the given cost allocation *** the increase in the safety stock level,the retailer's cost saving rate increases first and then decreases;and the retailer's cost saving rate increases with the increase in the size of the alliance,but it decreases as the number of product category *** proposed cost allocation rule can reduce the retailer's cost up to 20%,which is conducive to forming a cooperative coalition.