Abstract: This paper, giving the examples of ps anomalous variations at some geoelectric stations and the grouped earthquakes activity in the studied area, has studied the relationship between the general characteristic and evolution process characteristic of p. anomalous variations and earthquake occurence and has studied the precursory mark for the prediction of single earthquakes, which has practical significance for earthquake prediction by geoelectric method, especialy for the adjudgement and prediction of seismic situation after the first earthquake.