In this paper, the magnetic field changes in the ultra-low frequency range (ULF) are investigated using data from swarm A and swarm B satellites, and the possibility of detecting some pre-earthquake magnetic abnormal signals is investigated. Probably due to the relationship between the lithosphere-atmosphere-ionosphere, which could be a potential pattern of earthquake prediction. In this method, by filtering the frequencies of the magnetic field, the pc3 range is considered and by using the wavelet transform power, the desired frequency range is plotted in terms of latitude and longitude. East Azerbaijan, which occurred on Friday, 17,Aban , 1398 at 02:17:04 (local time-Tehran) and 07/11/2019 at 22:47:04 (UTC) with a magnitude of 5.9 on the Richter scale to observe anomalies An earthquake occurs above the area.