The Semantic Web service discovery is a hot spot in the current web service research field.Its core research content is service descriptions and the corresponding discovery methods.Service description can be divided into the service request description and advertisement description.Service advertisement descriptions are usually complete

descriptive

information-rich descriptions;while service request description is concerned only with some of the characteristics of services

usually does not constitute a complete description of the service.Current methods of service discovery using the same mechanism to describe both request and advertisement.Compare and identify the identity or similarity of the corresponding part between the two as matching basis.Build a complete fictive service description as service request limit the practicability of the method.In this paper

we propose to use semantic web query language SPARQL-DL as the service request description language to retrieve OWL-S form published services.Treat the service discovery issue as query against the knowledge base.Through the experiment

confirmed that the method is practical

simple

reliable and easy-to-use.