Abstract: It is very important for enterprises to utilize resources efficiently inside and outside in order to improve the efficiency. A new framework that services and data are composed dynamically based on enterprise service bus(ESB) was proposed, in which business process was analyzed into service-data flows and the weight computation method was used for evaluating the separating rationality. Dynamic routing mechanism was applied to map abstract service to service proeiders and map abstract data to datasources. Abstract service description table (ASDT)，abstract service mapping table (ASMT),abstract data description table (ADDT),and abstract data mapping table (ADMT) were modified by service data muter for solving the conflicts. Finally, the method has also been applied in Yunzheng System of Hcilongjiang Province,in order to prove it's feasibility.

Key words: Enterprise service bus, Servicedata flows, Dynamic routing mechanism, Servicedata router