Abstract: Since 2001, around the Bayan Kara block margin occurred the 2001 Kunlun Mountain 8.1, the 2008 Wenchuan 8.0, the 2010 Yushu 7.1, and the 2012 Lushan 7.0 earthquakes. Comparing the variation characteristics of seismic strain release intensity before and after the Kunlun Mountain 8.1 earthquake, with equal time length, relevant region and earth dynamics, we found that after the earthquake, seismic strain release obviously enhanced in the Longmen mountain area, Batang area, hot springs on the west side of the basin to the north and south. The Wenchuan earthquake occurred in the first area, the Yushu earthquake in the second area. It shows that after earthquake occurred on the East Kunlun rupture on the north boundary of the Bayan Kara massif, materials on the south side migrated towards southeast, structural deformation is concentrated in the Longmen mountain structural belt, and then rupture occurred. The examples illustrate that the regions of increasing seismicity is prone areas of longterm destructive earthquakes. After the February 12, 2014 M_S7.3 earthquake occurred in Xinjiang, seismicity and seismic strain release in junction area of eastern Qilian Mountain tectonic belt and the Altyn Tagh fault zone enhanced markedly, and longterm seismic hazard of this region is worth concern.

Key words: Earthquake risk, Seismic strain release, The 2014 Yutian M_S7.3 earthquake