The aim of this research is to present the possible using of XML and RDF in developing the concept of Semantic Web. It is provide a brief introduction to the Semantic Web and defines related terms, in addition to discuss the optimize method to describe web contents using both XML and RDF. However, there have been different work dealing with the same issue, but our approach is more intended to deal with semantic information and produce different standard format. The approach focus on developing a simulate web search engine to describe and emphasize whether to deploy XML or RDF in web search.