本文主要讨论了一个基于COM组件技术的在线拍卖平台的设计与实现过程，并给出一个在线拍卖平台的设计框架，还讨论了它在关键实现技术。最后讨论了本系统的有缺点以以后的工作防线。-This paper mainly discusses a COM technology based online auction platform design and implementation process, and gives an online auction platform design framework, but also discussed its key technology. Final discussion of the shortcomings of the system to work in future defense.