摘要:在竞争日趋激烈的今天，为了降低企业成本和环保，回收将成为企业物流的一个关键问题，回收物流是企业实现循环经济和绿色环保中的重要一环。回收物流指不合格物品的返修、退货以及周转中使用的包装物从需方返回到供方所形成的物品实体流动。企业要有效的进行回收工作，关键是是采用适合本公司的回收模式。如何有效的进行回收，对资源进行最大限度的使用，是选择物流回收模式的依据。

S企业的物流回收模式研究是通过对其不同环节的回收方式进行分析比较以选择最优模式,通过建立数学模型来具体研究。现目前典型的回收模式有三种：第三方负责回收、生产商联合体负责回收、生产商负责回收。S企业所采用的回收模式是将其具体化到供应商、配送中心和门店来完成。建立模型时，通过对比各种模式下的回收成本、回收数量、回收努力程度以及生产商的利润来获得最优解。

关键词：回收物流  回收模式  数学模型

ABSTRACT:In today's increasingly fierce competition, in order to reduce the enterprise cost and the environmental protection, recycling will become the enterprise logistics is a key problem, recycling logistics is enterprise implementation of circular economy and green environmental protection is important one annulus. Returned logistics refers to the unqualified item repair, return and the return of the flow used in the packaging from the buyer to article entity that the supplier form flow. Enterprises to recycle work effectively, the key is to adopt suitable for recycling mode of the company. How to effectively recycle, to make maximum use of resources, is to choose the logistics mode.

 S enterprise of logistics mode research is the analysis of the different links of recycling methods of comparison to select the optimal model, by establishing a mathematical model to the specific research.At present there are three kinds of typical recovery mode: the third party is responsible to recycle, Manufacturers association is responsible to recycle and the producer is responsible to recycle. S recycling mode is adopted by the enterprise will be specific to the suppliers, distribution centers and stores. To establish the model, by comparing the various modes of recycling costs, the number of recycling, recovery effort and producer profits to obtain the optimal solution.

Keywords：Returned logistics；recovery mode；the model of Mathematical