介绍经典科学信息交流体系的几种Ⅰ型模式,提出科学信息交流体系的Ⅱ型模式。论述Ⅱ型模式的5种形式(私人交流、公共域或公共机构仓库、商业性左线出版、非商业性在线出版和作者付费开放出版),认为由于Ⅱ型模式业已形成,传统“纸”链文摘与索引服务模式(即Ⅰ型服务模式)已基本上被取代。 This paper introduces several types of Mode Ⅰ of the classical scientific information exchange system and proposes the Ⅱ mode of scientific information exchange system. Discusses the five forms of Type II (Private Communications, Public Domain or Public Agency Repository, Commercial Left-line Publishing, Non-Commercial Online Publishing and Authors’ Paid Open Publication), and argues that since Type II has been formed, the traditional “paper” chain Abstracts and indexing service model (ie Type I service model) has been basically replaced.