Abstract:The 2011 Tohoku-Oki MW9.0 earthquake not only caused more than 5 m coseismic displacement and significant post earthquake deformation of the surface in Japan, but also caused significant far-field coseismic and post earthquake deformation in the eastern part of Chinese mainland. In this paper, using intensive GPS data observed from 1999 to 2017, we infer the results of far-field coseismic and postseismic displacements with high spatial resolution in eastern China. The results show that the 2011 Tohoku-Oki earthquake produced coseismic deformation of eastward movement in the east of 105°E in China, and considerable postseismic deformation in northeastern China and Shandong peninsula. The accumulated GPS postseismic displacement has exceeded its coseismic displacement. The observed far-field coseismic and postseismic deformation are helpful to maintain regional geodetic datum, and to provide a priori constraints for investigating the lithosphere and upper mantle rheology.