This paper implements an automatic generation system of three-dimensional animation of fault motion. According to the fault strike, dip angle and slip angle provided by focal mechanism solution, the system firstly sets up a movement equation for fault control points by making a 3D fault model, and then generates the 3D animation of seismogenic fault by using the automatic animation generation technology. At the end of the paper, the 3D animation of fault motion of the Jiuzhaigou, Sichuan M_S7.0 and Jinghe, Xinjiang M_S6.6 earthquakes was made. The fault animation generated by this system provides a direct view of the fault motion process for the response administration for resisting earthquake and providing disaster relief during the earthquake emergency response period, which assists the response administration to determine the post-earthquake trends along with other information, e.g., the aftershock distribution. This fault animation can also be spread through social network, such as Weibo and Wechat, to provide better social services for the public.