分析了当前计算机支持协同工作 (ComputerSupportedCooperativeWork ,CSCW)系统普遍存在的问题 ,首先定义了协同的基本概念和类型 ,并引入协同代理的新概念 ,研究了CSCW这样的人机结合系统中协同成员间的语义通信机制和信息共享机制。在此基础上 ,分离出协同活动中的独立信息实体 ,建立了面向对象的协同活动模型。最后 ,用协同活动模型分析了一个典型的协同工作的实例。 Firstly, the basic concepts and types of collaboration are defined and a new concept of collaborative agent is introduced. The research on the relationship between collaborative members in CSCW system, such as CSCW, is analyzed. Semantic communication mechanism and information sharing mechanism. On this basis, the independent information entities in the collaborative activities are separated and an object-oriented collaborative activity model is established. Finally, an example of a typical collaborative work is analyzed using a collaborative activity model.