| The Web Service architecture has made a great impact on the design, development and deployment of Web application, and it is called a revolution on Web computing. This paper mainly researches the Web Service's architecture, working mode and its application. Extensible Markup Language (XML) is the basis of Web Service, and firstly we introduce conception, grammar, advantages, application and related protocols and terms of the XML in this paper. Then the Web Service's architecture including the concept of Web Service, model, stack and applied situation, especially SOAP, WSDL, UDDI and mutual relations. On base of it, this paper analyses and sums up the features and running ways. Finally, the paper takes the practical project of the specific application of B2B system as an example, and puts forward concrete solution approach. The application proves that Web Service as one new Web developing model has simple, universal and mutual capability. The developing model and conelative solution of the Application may be generalized. |