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

摘要： 数据挖掘旨在从海量数据中挖掘未知的有价值的新知识或规律，然而专业技术人员对应用领域背景知识不熟悉常常导致数据挖掘不能顺利实施。针对该问题，将本体这一知识表示方法引入到数据挖掘中，利用本体的特点，设计了一个基于本体的智能数据挖掘系统。详细介绍了系统各部分的构成及工作原理。该系统的实现能够将普遍的背景知识引入到数据挖掘的各个环节中，从而辅助技术人员顺利实现挖掘目标。

关键词: 数据挖掘, 本体, 数据仓库