Abstract: We tried to refine the comprehensive seismic anomaly characteristics of multiple methods before the large earthquakes (MS≥6.0) in the range of 150 km from the single seismic station. The seismic f requency, bvalue, seismicgap, Zvalue, small earthquake modulating ratio and seismic danger deg ree with the epicenter distances of 200km, 150km and 100km were calculated by using the seismic data of the Kashi seismic station. Through analyzing these compo nents, it is found that there are anomalies with various grades on each method before the strong earthquakes, which co rresponded to the strong earthquakes with the range of 150km. However, there is no good respondence to the strong earthquakes with larg er epicenter distances. It is also found that the anomalies of multiple methods with the three distance scales have the empi rical correlation with the space extent of the coming strong earthquakes.

Key words: Comprehensive seismic anomaly, Single station seismology, Kashi seismic station