The application and research on CORBA(Common Object Request Broker Architecture),DCOM(Distributed Component Object Model) and agent technology in enterprise information system reengineering are current academic focus. Based on COM(Component Object Model)/DCOM technology, the paper provides how to setup the middle control module of message management & distribution mechanism and the realization methods for enterprise information system reengineering. Thus it can reach nice impact on information system reengineering of small-middle scale enterprises.