Electronic document management system (EDMS) had been developed instead of traditional document workflow, however, the security and the workflow are the key successful factor for developing EDMS. This paper describes an electronic document management system using ASP and Exchange Server to serve different documental workflows, especially for the circular workflow where documents are sent sequentially by a pre-arranged list. Through a well design structure the system is expected to meet the requirements of documental workflow by general and inexpensive software.