Based on the analysis of WWW information and the structure model, this article expounds the procuring process of information on WWW, and discusses the choice of engine based on the procuring process.

• 本文在分析WWW信息表示及其结构模型的基础上，阐述了WWW的信息获取过程，探讨了基于WWW信息获取过程的引擎选择。