Abstract: In this paper, the statisties and analysis of the variations of 189 observed items after the Tangshan M7.8 earthquake have been made, the relation between the differential characteristics of 5 kinds of variations in quantity after the earthquake and the follow-up earthquakes has been discussed, the corresponding relation between the distribution characteristics of anomalies after the earthquake and the follow-up seismic area and anomalous seismic activity has been analyzed. It is considered that using some comprehensive characteristics of the precursors after earthquake, coordinating seismomitry method, to make tendency prediction is of practical value.