The variations of the data on the electrode faults in the geoelectric field in Hebei province in recent years are analyzed and summarized. The data variations are considered stable without interference, and a "peak valley" shape can be seen in the images recorded by several stations. Moreover, the correlation coefficient and difference are satisfactory. The synchronous interference of the data on the electrode faults in the geoelectric field in two channels mainly indicates the following: (1) the correlation coefficient of the data in the two channels decreases, and the difference becomes large; (2) the image shows synchronous step, jump, and long-trend changes. The position of electrode failure can be preliminarily determined according to the synchronicity of the data variation. Meanwhile, nonelectrode faults also need to be eliminated. The observation environment, instrument, external circuit, circuit connector, and wiring board are first checked, and the electrode failure is determined with a contrast test. The Butler-Volmer equation and Nernst equation are used to analyze and explain the data variation caused by the electrode failure. The results of this study can serve as a reference for stations in judging electrode faults promptly.