关键词: 数据挖掘, 本体, 数据仓库

Abstract: Data mining often cannot be implemented effectively as professionals and technical personnel lack of the background knowledge of application fields.Therefore，aiming at this issue，the ontology which is a representation of knowledge is introduced into data mining，and take advantage of its characteristics to design an intelligent data mining system which is based on the ontology.The composition of all parts from the system and working principle are described in detail.The implementation of this systen can introduce the common background knowledge into every section of data mining，and help technical personnel to achieve the goal successfully.

Key words: data mining, ontology, data warehouse