本文给出了一个做为分布式开放超媒体系统 DOHMS核心的链接机制的设计思想和模型 ,其中包括链与数据分离、分布式链服务 ,动态建链等内容 .该链接机制符合开放超媒体工作组 (OHSWG)提出的开放超媒体中链的特征 ,并能与 Dexter参考模型中的概念保持一致 .本文讨论了其产生来源、内容 ,主要特点 ,并进一步讨论了其在 DOHMS系统中的实现 This paper presents a design idea and model of DOHMS as the core link mechanism of distributed open Hypertext system, including chain and data separation, distributed chain service, dynamic link building, etc. The link mechanism is in line with the open hypermedia work (OHSWG), and can be consistent with the concept of Dexter reference model.This paper discusses its origin, content and main features, and further discusses its implementation in DOHMS system