Abstract: A federal system architecture based on HLA for collaborative design was constructed and the structure and function of the platforms were explained by analyzing characteristics of collaborative design for complex products and applications of High Level Architecture(HLA) in engineering collaborative design.To deal with the problem of data consistency in the process of designing,time management strategies of federates in every platforms were proposed,and the procedures of system time advancing were given.Meanwhile,by utilizing the way of setting logical counter of internal and external event and lock mechanism based on arbitration,the initial consistency problem of design federate dynamic registration was solved in the running process of the system.