Abstract: It is hard to integrate the relatively independent business information systems developed at different times in tobacco industry by means of traditional technology.Therefore,the rules for information exchange between the industry's various business information systems,including electronic commerce,electronic administration,management and decision-making system,and enterprise's service bus were defined by incorporating service-oriented architecture,and the information exchange and business coordination between enterprises were realized via enterprise's service bus.The integrated application of service-oriented business architecture,technology architecture and security architecture of information system in enterprises was introduced,the basic principles and methods of service statute composition were determined,and the planning of security management and monitor about the service-exchange platform was discussed.The application of service-oriented architecture enabled different systems to adopt the uniform service standard for information exchange,comprehensively plan the information exchange format between various systems,and carry out information exchange via the form of webs service.