Abstract: Western Xia is a vibrant and mysterious dynasty whose rise and fall has been accompanied by seismic activity. Because the Gansu-Ningxia region happens to be a high seismicity area, and I would like to take this opportunity to talk about the seismic activity here. For the doubts about the 996AD earthquake event, this paper makes a preliminary discussion on the intensity of small earthquakes, historical records, geological trenching, and the intensity of earthquakes. The location and magnitude of this earthquake is tentatively estimated. The lessons of flooding from the 1739 Pingluo earthquake are also presented. New research on the 1920 Haiyuan magnitude 8.5 earthquake has revealed much new and invaluable information about its occurrence background in the context of global activity. The emergence of Gansu-Ningxia triangle area is the result of deep material transport, the mechanical relationship is a three-body problem, analyzing its mode of movement should pay attention to both translation and rotation. For seismic conditions, in addition to fault zones, structural differences in deep physical properties should be emphasized.