Abstract:Agricultural administration by information is one of the important components of sustainable agriculture in future.Because agricultural system concerns nature, ecology, resource, economy, society, policy and funds, contains farming, transporting and selling, it needs large quantities of spatial information and advanced information networks for management, analyticat tools and expert system for decision support.On the basis of commenting on "3S" technique, this paper develops a basic frame for agricultural system administration by information, and discusses its key techniques and applications in general.