Abstract: With rapid development of information technology，the function of agricultural information website needs to be improved，not only to browse，query and download，but also to further develop and realize dynamic analysis and prediction of data.Professional data mining is technically possible，but it is too strong to be used by ordinary agricultural people.Based on analysis of existing problems in the agricultural platform，the idea of constructing intelligent agricultural platform based on data mining was put forward.Some basic and necessary functions were designed and realized，such as soil fertility grade analysis and yield prediction.It had characteristics of simple operation and easy analysis.