The paper is based on instrumental records of historical seismic data during the year 1900-2008.The largest earthquake magnitude and frequency based on various statistics magnitude stall on the frequency of occurrence(the earthquake(Ms≥4.7).According statistics to establish the magnitude-frequency relationship equation,and use the statistic software of SPSS to fit their analysis.to establish the regression lgN=a-bm by the analysis of the result of magnitude and frequency analyze.The relationship between mag...