介绍了部分专业检索人员对Web检索与联机检索的看法、以及一项关于联机与Web搜索引擎两者检索效果的对比性研究。鉴于目前大量传统的收费情报可通过Web免费获取 ,作者着重讨论了如何在Web上免费检索各类传统情报 ,并指出Web免费检索传统情报对联机检索带来的冲击 This paper introduces the views of some professional search personnel on Web search and online search, as well as a comparative study on the search results of online and Web search engines. In view of the fact that a large amount of traditional fee information is freely available on the Web at present, the author focuses on how to search various types of traditional intelligence on the Web for free and points out the impact of the free retrieval of traditional intelligence on the Web