The distributed workflow management system -- FlowAgent. While mainframe or 2-tier client/server system have serious problems in flexibility and scalability for the large-scale business processes, 3-tier client/server architecture and object-oriented system modeling which construct business process on service components seem to bring software system some scalability. As enabling infrastructure for object-oriented methodology, distributed WFMS (Workflow Management System) can flexibly describe business rules among autonomous `service tasks’, and support scalability of large-scale business process. But current distributed WFMS still have difficulty to manage a large number of distributed tasks, the `multi-TaskDomain’ architecture of FlowAgent try to solve this problem, and bring a dynamic and distributed environment for task-scheduling.