中文摘要：

运用质量成本理论，分析影响企业最终产品质量及企业生产质量经济效益的两大因素——供应商的产品质量与企业自身的生产系统质量水平之间相互作用的规律。分析结果显示，随着企业自身生产系统的质量水平的降低，由于供应商质量问题引起的损失成本增量将越来越小；总采购成本随着供应商提供的产品出现质量问题的概率的增大而变化，如何变化及最优供应商质量水平取决于单位合格产品的价格与质量水平对质量成本影响系数的大小关系。因此，企业选择供应商的质量水平时，应考虑自身的质量水平，避免盲目追求高质量供应商的现象。

英文摘要：

Quality costs theory was used to analyze the interaction between quality of supplier and quality of intramural produce system, which affect the quality of final product and quality economy of enterprise. Analysis results revealed that incremental loss caused by quality of supplier will decrease with falling of oneself quality level; Total procurement costs varies with increase of probability of quality defects caused by suppliers, but how to vary and which quality level is best depends on minus result of the price of per qualified product and the influence coefficient of quality mevel to quality costs. Thus, intramural quality should also be considered when selecting the quality level of supplier to avoid pursuing supplier for high quality product with blindness.