In the analysis of existing travel information service system of the main problems and travel information services on the basis of the relevant business processes, combining Service Oriented Architecture (SOA) the advantages. This paper proposes a method of travel information service system based on SOA overall design scheme. Its core content is SOA thought, as a theoretical guide in technical standard. The use of the existing AJAX, XML and Web Services, and other related technologies. For travel information services designed to service granularity. The scheme through a loose coupling, cross-platform system structure to reusing existing application system function module, easily incorporated into existing application systems to the new systems. Thus fully utilize existing resources.