In this paper, the authors have analysed the two kinds of different prediction methods, which are the induction-magnetic effect and the correlation between the seismology and geomagnetism, according to the basic concept of magnetism. The data of many years have been applied to examine the three concrete prediction methods statistically. It is thought that the combination of the amplitude-phase method and low point displacement plan is of a certain effects to predict the moderate-strong earthquakes, especially the seismic occurring time. Finally, the Leaping over prediction method linked to the earth-quake prediction of the various magnetic field has been discussed.