Аннотация:The article presents the results of applying electrical resistivity tomography to study of active tectonic faults in southern Yakutia. To conduct the study we performed dipole-dipole array ABmn, two pole-dipole array Amn+mnB and reverse Schlumberger array mABn. In the case of Southern fault altered zone is clearly defined in the electrical survey data. In this case the direction of incidence and the geological features of the structure are clearly visible. In the case of Northern fault structure zones of altered rocks revealed not so clearly. Geoelectric boundaries are in good agreement with the data of seismic tomography