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Ontology as a concept and model description way, is widely used in various fields, and achieved good effect. Ontology based on intelligent Agent how to realize its definition of the concept in Meta search engine, help system realize the personalized, still need further research. This paper put forward a meta search engine personalized mechanism based on ontology with the use of the Agent technology, this mechanism through mining user behavior of characteristics with Agent for information retrieval, combining ontology technology set up and update the user general view, can well reflect user current interest and to the user's interest to the renewal of the dynamic. Based on ontology users can also according to the user's query scene reasoning and used in filter search results, can make the search results to meet user needs, has the personalized. Finally, in the intelligent Meta search engine prototype platform of the …