Abstract: In the collaborative project ,or in the development of novel products, several teams cooperate together, and bring expertise, human resource, and data set required by the project to the common effort. As a dynamic workflow, decentralized cooperative workflow system implements the dynamic workflow model and effectively supports the cooperative work of several teams located in sites geographically far away, the teams registered in heterogeneous hosts cooperate together to complete the project and communicate through the HTTP protocol. A new decentralized workflow system is provided; teams can communicatefleetly and effectually through network address query manner adopted by this system. In order to save the human resource, every team is responsible for distributing the tasks to its members reasonably, the connectionof members in a team and of members between the teams ensure the security of the network. . 6 Refs In Chinese

Key words: dynamic workflow model, decentralized cooperative workflow system, HTTP protocol