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 fr a mework, but also discussed its key technology. Final discussion of the shortcomings of the system to work in future defense.