中文摘要：

基于信用商业的考虑,从零售商角度出发,分析在供应商-零售商、零售商-顾客两级信用支付中,零售商对供应商提出的现金折扣和延期支付策略的选择,构建了各种情况下的成本模型,通过推导、求解,得到零售商最优付款时间及最优订货周期,最后通过算例验证了模型的正确性和可行性。

英文摘要：

In the consideration of credit risks, the choice of the supplier＇s cash discounts or delay payments policies is to be settled by analysis of the supplier-retailer, the retailer-customer two credit payment from the retailer perspective. The optimal payment times is given through the establishment of the cost model. Finally, numerical example verify the correctness and feasibility of the model.