In the modern informatization construction, ERP has gradually become a common management information system at home and abroad, it was very important on making a consistent decision and sharing resource of the enterprise. But the coexistence of heterogeneous systems lead to disperse resource, and it makes that there are not any information of integrative, efficient and accurate for decision-makers from ERP. This paper analyzes the technology of Data Exchange, and combines the applications of Web Services and Enterprise Service Bus, thus it gives a method to resolve the heterogeneous data in the group company, it is finally seamless integration among the different systems.