中文摘要：

本文运用委托一代理模型，分析抽样检验与信息系统控制对供应链质量管理的影响和作用。传统的抽样检验尽管能有效提升产品质量，控制供应商的机会主义行为，但是作为一种事后的控制，无法弥补机会成本的损失，基于供应链信息系统的质量控制能有效地补充传统抽样检验的不足，实现供应链整体收益的帕累托改进。

英文摘要：

The paper uses principal-agent model to analyze how traditional sampling and information system impact on supply chain quality management. Although sampling can improve product quality and control suppliers＇ opportunisms effectively,as an ex post control it can not make up for the loss of opportunity cost. Information based quality control can be a good complement for sampling, and make the supply chain revenues Pareto improvement.