Abstract: Based on the earthquake retrospective testing, the experiment of rock rupture and the results of GPS observation, the prediction efficiency of the method and the potentially risk areas of strong earthquakes in China′s mainland in next 1~3 years are studied in this paper by means of the Seismic Inhomogeneous Degree (GL value). The result of efficiency evaluation proved that GL value can well depict the state changes of acoustic emission activity with time, which resulted from the rupture nucleation before rocks becoming instable. And the changes may be associated with the strong earthquake preparation. The space-time scanning results of GL value show that the high risk area of strong earthquakes in China′s mainland in the next 1~3 years is mainly concentrated in the northern part of Tibetan plateau and the Southern TianShan range region in Xinjiang Uygur Autonomous Region, where the earthquakes with magnitude 6.5, even greeter than 7 will take place with greater probability.

Key words: Earthquake tendency, Method evaluation, Earthquake research, Seismic inhomogeneous degree