Abstract: In this paper, according to the China Southern Power Grid Spatial Information Service (GIS) platform construction,Combined with electronic map and grid resources data quality status of each sub province company,Proposed suits the data of current technology of spatial data quality control system. And for each one of the key links in the technology system are carried out technical realization, Through the area proved to be scientific and economic benefits of the technology system. Further the technology system of landing long-term control mechanism for quality control, Provide technical support for spatial data for long-term stable operation of the GIS platform.