Abstract:On March 14,2015,a magnitude 4.3 earthquake occurred in Fuyang,Anhui. This article examines the dominant azimuth angles of the geoelectric fields recorded at the Mengcheng,Zhoukou,and Jiashan stations from 2013 to 2016. The analysis reveals that five months before the earthquake,the dominant azimuth angles of the geoelectric fields at Mengcheng and Zhoukou stations-both located closer to the epicenter-exhibited a significant quasi-synchronous deviation. This anomaly persisted for nearly eight months. A few months after the earthquake,the dominant azimuth angle of geoelectric field at the Zhoukou station returned to its background level. Further analysis showed a markable increase and change in the amplitude of the NS direction in the short harmonic component of the geoelectric field at Mengcheng station before the earthquake,which may be linked to the generation and occurrence of the earthquake. In contrast,Jiashan station,located farther from the epicenter,did not exhibit any noticeable anomalies in the dominant azimuth of the geoelectric field.