Abstract:Based on an examination of three stages of global navigation satellite systems (GNSS) observation data from 2009 to 2011, we obtained the horizontal movement velocity, principal strain rate, surface expansion rate, and maximum shear strain rate around the epicenter area before and after the Xinyuan-Hejing MS6.6 earthquake of 2012. The results show that (1) the main movement trend in the research area is a reduction in the horizontal movement rate from south to north. The movement rate in the southern region is higher than that in the northern region, and the movement rate in the central area is higher than those in the east and west regions. (2) The positive negative alternate zone of the principal strain rate along the fault has some relationship with the earthquake. Between the two surface shrinkage areas is an important earthquake area. The regional change of the shear strain rate can reflect the direction of earthquake rupture.