Abstract: 【OBJECTIVE】 By taking use the technology of data mining to resolve the problem of “information explosion but lack of knowledge ”in agricultural research. 【METHOD】In this paper, we introduce and analysis the characters of data mining technology and agricultural information .【RESULTS】Offer a proposal that using data mining in agriculture area and on the foundation of the technological process and the concrete technology of data mining, construct a data mining system with three layers basing on agriculture, and introduce the functions of each layer. 【CONCLUSION】 By using data mining technologies, this paper aims to improve the service level of the Agricultural Database, based on their existing large-scale data storage and powerful computing capabilities.