This paper analyzed geoelectric field observation data at Gufeng, Sitan, and Pingcheng stations from an electromagnetic, satellite ground-based, comparative observation system. Results showed that:(1) The normal diurnal variation was clear from geoelectric field data at the three stations. (2) During the occurrence of a geomagnetic storm, geoelectric storm changes were recorded in all directions of the geoelectric field, and the maximum variation amplitude of the geoelectric field was significantly larger than that of the normal diurnal variation. (3) Impending anomalies before the earthquakes, recorded by the geoelectric field at Sitan station, agreed well with earthquake occurrence in time and space.