In order to storage, manage and sharing of farmland information, hierarchical storage and management model of farmland information was founded with spatial database technology based on building farmland information metadata. Shared services and interoperate model of the farmland information was also established with metadata service and component technology on the platform of Super Map GIS, and these were the basement for fulfilling the metadata-based integrating storage, management and sharing of farmland information. By extracting and packaging the data in “WebGIS-based decision-making system of wheat precision fertilization” and “GIS-based evaluation system of crop potential output in Henan Province”, the lossless data sharing was achieved. Results showed that the metadata and metadata service technology are feasible and effective to solve problems on the integrating storage, management and sharing of farmland information based on the establishment of standard farmland information metadata.