Abstract: In the application of mobile agent, agent don’t finish tasks by itself, but it need cooperate and exchange information with other agents. Mobile agent has a character that its position often change, as the current methods of tracing agents’ positions exist shortages in aspects of spending of lookup and storage or system security, this article provides a method of tracing agents’ positions to overcome these problems, the method mostly works out the problem of tracing agents’ positions and how to deal with the information in the process of agents’ transfer.

Key words: Agent, Mobile agent, Position tracing, Agent shadow, Information buffer

摘要： 在Mobile Agent 的应用中，Agent不是孤立地完成任务，而是需要不断地与其它Agent进行协作和信息交换。而Mobile Agent的特性使它的位置又经常变动。文章论述了一种实现Mobile Agent位置透明通信的方法，主要解决Agent位置追踪问题和Agent迁移时的消息处理。

关键词: Agent, 移动Agent, 位置追踪, Agent影子, 消息缓冲