Abstract:Plots assistant examination system based on GP service provides technical assistance and efficient means for the Department of land and resources to implement urban and rural pothook project and farmland protection project. The system is based on the current situation of land planning and spatial data. Based on the GP service, land plots of scientific and automated verification by using geographic information technology has been realized, plots results has been displayed visually, accuracy of land inspectors has been improved, and artificial operation error can be reduced. In this paper, data frame design, technology process and application have been introduced as well.