物资供应费用在煤炭企业产品成本中占有很大的比重，加强供应物流的科学管理，合理组织供应物流活动，对降低生产成本有着重要的意义。目前我国煤炭企业供应物流系统还比较混乱，并最终导致吨煤成本上升，企业经济效益下降。而当前对这方面研究还不够深入，且多集中于系统的某一方面。因此，本论文运用系统工程理论与方法，对煤炭企业供应物流系统进行分析研究。 论文首先对煤炭企业供应物流系统特征进行了分析，在此基础上分析了煤炭企业供应物流系统结构，并建立起了煤炭企业供应物流系统优化的解释结构模型，得出了采购和库存控制是煤炭企业供应物流系统的关键结点的结论，然后重点对煤炭企业采购策略和库存控制模式分别进行了研究。 在分析煤炭企业传统采购模式缺陷的基础上，提出将MRPⅡ理论应用到煤炭企业物资采购中。通过对煤炭企业物资需求特点的分析，提出用物资消耗定额代替MRPⅡ中产品结构分析这一环节，解决了将MRPⅡ应用于煤炭企业所存在的困难之处，形成了煤炭企业MRPⅡ采购模式。并对采购环节所涉及到的供应商选择方法进行了探讨，提出了煤炭企业供应商选择的模糊综合评判方法，建立了煤炭企业供应商评价指标体系，对体系中的定量指标引入了降半正态分布函数来进行评判，举例验证了煤炭企业供应商选择采用模糊综合评判法的有效性。 对于，煤炭企业库存控制问题，本文中采用相关需求的库存控制模式—MRPⅡ库存控制模式予以解决，并通过算例验证了MRPⅡ库存控制模式对于减少煤炭企业库存，降低库存成本的有效性。 此外，本文还探讨了煤炭企业配送体系的优化问题以及煤炭企业物流信息系统结构和系统流程。

The material supply cost owns much percent in the product cost of coal enterprise. So it has important meanings in reducing the cost of product to strengthen the management of supply logistics, organize the activity of supply logistics. While the current supply logistics system of coal enterprise is still relatively confused. This ultimately cause rise of the cost of each ton and decline of the benefit of the enterprise. Meanwhile, the researches on the supply logistics system of coal enterprise is not deep enough and mainly concentrate on certain respect of the system. So the thesis analyzes and study on the supply logistics system of the coal enterprise by system engineering theory. Thesis analyses the characters of the supply logistics system of coal enterprise at first, analyses the structure of it on the base of this, set up the explanation structure model of system optimization, draw a conclusion from that model that procurement and inventory control are the key joint of the system. And then the thesis works on the procurement model and the inventory control model of coal enterprise emphatically. On the base of analyzing the defect of tradition procurement model of coal enterprise, this thesis propose to apply the MRPⅡ into the material procurement of coal enterprise, and use the material consumption quota as the replacement of the product construction analyze in MRPⅡ. This solve the problem when apply the MRPⅡ into the coal enterprise and form the MRPⅡ procurement model of coal enterprise. And then, discuss the supplier selection method which attach to procurement. In this thesis, present the fuzzy comprehensive judgment model of the coal enterprise supplier selection, presents a set of supplier selection index of coal enterprise, and uses the lower part normal distribution function to judge the quantitative factor. Finally, give an example to confirm the validity of this method. As for the inventory control, this thesis solve it by using the inventory control model of relative requirement—MRPⅡ, and confirm its validity to decline the inventory cost of coal enterprise. In addition, this thesis discusses the optimization of coal enterprise deliver system, and then, discusses the system construction and systematic flow of coal enterprise logistics information system.