Abstract: Basing on the following aspects: 1) the correlation of the macroreiiei and distribution characteristics of the great continental earthquakes in china; 2) the fault plane solution of 127 events; 3) data on 18 great earthquakes of fractured zone; 4) the rate of slip motion along the earthquake fault zones, a dynamical cause of the great continental earthquakes in China was studied, a dynamical model of their stress field adjustment has been presented and is also used to explain the continental seismicity of china.