This paper proposes a new expert web search engine for Web Environment. It applies a knowledge engineering based technique for the development of this expert system. To understand the basic functioning of search engine, various Web Forums and Blogs have been considered. Our work develops Intelligent Agent and Interaction Agent based knowledge base of Search Engine. This knowledge based Search Engine model thus developed will be useful in knowledge management and knowledge reuse. At user level, it can be used for suggesting best search results to the user and at organizational level it can be used for drawing various conclusions for managing quality database for better application use.