Abstract: Earthquakes with magnitude greater than or equal 8.0 has being active in the global world since 2001. From the distribution of M_S≥7.5 earthquakes, these strong earthquakes are relatively concentrated in the western Pacific Seismic Belt and the Eurasian Seismic Zone, especially the boundary belt of convergence of India-Australian plate. Under this background, there were two earthquake of M_S≥8.0 occurred in western China. During 2009 there were more than 20 earthquakes of M_S≥7.0 in the whole world (as up to November 15), of which 15 still occurred in the Indian-Australian plate. So the spatial distribution of strong earthquake worldwide is still in the case as before. In this paper, based on the movement pattern of the India-Australia plate and related seismic research, using strain releases of strong earthquakes, we analyzed the possible impacts of each other between the seismic activity in western China, Indian plate and the Australian plate. The results show that there is a good correlation between the seismicity in western China and those in the boundary of Indian plate. From1914 to 1993, five complete release time periods of strong earthquakes in western China have better correlations between the seismicity in western China and those in the boundary of Indian plate. And comparatively speaking, strong earthquake activities in western China is relatively impeded by a lag of 0~5 year, which maybe useful for tracking the trend of strong earthquakes in the China continent.

Key words: India-Australia plate, Western China, Correlation, Seismic activity