Web Data Mining is an important area of Data Mining which deals with the extraction of interesting knowledge from the World Wide Web. It defines the application of data mining techniques to extract knowledge from web data, including web documents, hyperlinks between documents, usage logs of web sites, etc. Therefore, the process of extracting useful information from the contents of web documents and the Content data is the collection of facts a web page is designed to contain, it may consist of text, images, audio, video, or structured records such as lists and tables. The data used for web content mining includes both text and graphical data. Content mining is divided into two parts, one is webpage content mining and other is search result mining. Here, it defines the information retrieval and information extraction from web and making research for data mining.