Abstract: Nesting Web service in the view of service requesters, only specification can be obtained. 13y now, the methods that generate test cases by analyzing the input or output parameters were introduced in some papers. This paper used the input or output parameters in OWI: S specification to generate test data. And Web service control-flow graph was constructed by analyzing the service model information in OWL-S specification. Then, the reduction of test data was performed based on Web service control flow graph,which will improve the efficiency of the test cases and reduce the test cost.

Key words: OWL-S, Service model, Test case generation