Abstract: Lacking of flexibility was found in previous logistics information systems, and using the technology of web services a practical design workflow and modeling method was proposed based on a thoroughly research and analysis of the service-oriented architecture (SOA) theory. It was discussed to implement the "order treatments" workflow on the flat of a cross-language and cross-operation system by combination, arrangement and coordination of business process execution language (BPEL). Web services based on SOA for a local logistics information system and for a heterogeneous platform were realized. Because of SOA, the logistics information system is easily browsed on every business platform. SOA accelerates the application developing process and also permits a un-programmer to create and reuse information technology resources.