Web service dynamic calling system and method

The present invention discloses a Web service dynamic calling system and a method, which comprises a service asker, a UDDI service registration center, a service provider and a calling agent, wherein the calling agent is respectively communicated with the service asker, the UDDI service registration center and the service provider by massages; a massage resolver, a service matcher, a service calling device and a result processor are arranged in the calling agent; and a semanteme body database is set up in the calling agent which respectively provides semanteme matching to the service matcher and the result processor. The present invention has the advantages of that closed coupling relation between the service asker and the service provider is thoroughly removed by the leading the calling agent in, which provides well maintenance to the exchange and updating of Web service; as the calling agent is an independent running service independent to any static component, so dynamic calling istruly realized; and by le