Abstract: The Hetian geoelectric field station is located about 305 km away from the epicenter of the Yutian M_S6.4 earthquake on June 26, 2020. The mean value of the correlation coefficient between the stations in different azimuths is about 0.8. The multipole distance principle is used to obtain the geoelectric field of the station two months before the earthquake. The “near field” information from the data is more complex, but it has a certain degree of reliability. The dominant azimuth α of the station with different polar distances and the correlation coefficient δ_NS/NW between the different azimuths have been calculated, which indicates that there are different anomalies in the long and short polar distances α and δ_NS/NW several months before the earthquake. From 2011 to 2019, 6 earthquakes above M_S5.0 occurred in the 300 km area around Hotan Station, which has similar geoelectric abnormal phenomenon characteristics with the Yutian M_S6.4 earthquake. This reflects that at the same site, there may be differences between the long and short pole distance observation devices for geoelectric field monitoring on moderate and strong earthquakes.

Key words: the 2020 Yutian M_S6.4 earthquake, Geoelectric field, Multi-channel, Anomaly, Difference