介绍基于OpenURL的SFX Context Sensitive Linking和基于DOI的CrossRef这两种目前主流的动态链接系统。指出SFX具有本地化、互操作性强和可定制的特点,能够针对用户对资源的可获得性给出合适的链接;CrossRef链接直接指向出版社文献信息网页,链接准确稳定,但不适合用户获取最终文献。讨论CrossRef链接存在的问题,分析SFX的特点,并在此基础上提出将SFX与CrossRef/DOI结合使用的方法,指出这将增强和完善SFX的链接功能,同时解决CrossRef/DOI合适链接的问题。 This paper introduces two main current dynamic link systems, SFX Context Sensitive Linking based on OpenURL and CrossRef based on DOI. It points out that SFX is localized, interoperable and customizable. It can give users appropriate links to the availability of resources. The CrossRef links point directly to the publishers’ literature and information pages with accurate and stable links but not suitable for users to obtain Final document Discuss the problems of CrossRef link and analyze the characteristics of SFX. Based on this, we put forward the method of combining SFX and CrossRef / DOI, and point out that this will enhance and perfect the link function of SFX and solve the problem of appropriate CrossRef / DOI link.