Abstract: Based on the summarization and extraction of regional agriculture cropping evaluation theory and technology achievements, a set of dynamic knowledge models which can be used for cropping ecological zoning, cropping system design, precision management, and estimation of cropping productivity were developed through system analysis theory and modeling method. By using the technology of software component, with GIS as spatial information management platform, a GIS and model-based system for cropping design was developed. The system realized the standard management about regional cropping information and cropping system design and management at different levels, provided the functions such as file management, map handling, information query, ecological zoning, cropping system design, precision management, estimation of cropping productivity, expert knowledge consultation, system maintenance and system help. Case studies on the system with the datasets in Jiangsu Province indicate that the system can effectively carry out cropping design function, which lays a foundation for facilitating the quantification and digitization of cropping design system.