Manufacturing enterprises mainly take product research

design

procurement

production

sales and service business as the main line to carry out information work. At the early stage of construction

the application system serve for that base on each business system

along with the in-depth application of information technology

application system integration based on the relation among the business system is imperative. From the perspective of enterprises

the concern is not a specific integration technology or an abstract concept of integrated

in application system integration of the specific implementation process

what that the enterprise must prepare for and the key points that need to pay attention are the focus of this paper.