Abstract: Based on the summary and analysis of the geoelectric field observation data of Luoyang Seismic Station from 2018 to 2020, the abnormal records of the observation system caused by electric leakage in the survey area are summarized. Through the artificial power supply near the site to simulate the leakage interference, the comparative changes of the observation system and the leakage detector under the forward and reverse power supply and different voltage power supply around the survey area were observed. Comparing and analyzing with the leakage anomaly records of the observation system, the impact of near-site leakage on the geoelectric field of Luoyang Seismic Station is discussed, and the step direction and amplitude changes of abnormal data interference are obtained, so as to provide a theoretical reference for data interference and anomaly verification.