It is increasing important to get accurate information from the web. In this paper, the virtualization technology is adopted which the key technology in cloud is computing to build up a web data mining cloud model. This new model consists of Storage Cloud and Calculation Cloud. This paper transplanted the Scalable PaRallelizable INduction of classification Tree (SPRINT) algorithm to the distributed computing and compared the proposed method with the traditional method. Based on the above mentioned method, an improved specific instance of web date mining combined with the application of cloud computing is put forward.