To solve the problem of inter-regional and inter-departmental cooperative Work in construction organization, an office automation system integrated with workflow technology is presented. A visual and configurable workflow system, which can response to business process's changes and configure Business Process immediately, is constructed in office automation system by using with workflow technology.This workflow system realized business process's continuous optimization and reengineering.Base on this, office business process is used to provided business knowledge in office workflow's control, management and the process of Automatic transfer.Application results showed this system could improve the office efficiency and enhance the level of management.