Intelligent search engine GHunt is a network information intelligent acquisition and processing system, which is a complete solution for network information intelligent acquisition and processing. This system supports distributed parallel search of network information and content filtering; Secondly, it can recognize text categories and understand text information from the conceptual level, including text classification, clustering and text concept extraction; Thirdly, effective and unified text information management based on conceptual semantic space; Finally, it provides efficient semantic based text information retrieval, content-based image retrieval, and personalized thematic information recommendation services.