The observed transient postseismic deformation represents the response to stress perturbations induced by large earthquakes. The amplitude and spatiotemporal evolution of the postseismic deformation are closely related to frictional properties of the velocity-strengthening region of the fault plane and the viscosity of lower crust and upper mantle. The rheological parameters inferred through modeling the postseismic deformation gain insights to earthquake cycle time scale compared to those values derived from rock-mechanics laboratory experiments and geodetic observations of glacial isostatic adjustment. In this paper,we conduct a brief review on the postseismic geodetic observations following strong earthquakes occurred in China and surrounding regions over the past two decades,in particular the 2001 Kokoxili earthquake,2008 Wenchuan earthquake and 2015 Gorkha earthquake,and summarize the published studies on the postseismic deformation mechanisms and the inferred rheology of the lower crust and upper mantle beneath the margins and interior of the Tibetan Plateau. These progresses shed important lights on earthquake cycle deformation,seismic hazard assessment,tectonic evolution and geodynamics of the Tibetan Plateau. For better understanding the rock rheology of the lower crustal and upper mantle,we suggest to improve the spatial density and temporal resolution of GNSS network in the western China. Moreover,it is very significant to integrate the dynamic modeling of the postseismic deformation with extended geodetic data,such as geophysical surveys from seismic and magnetotelluric imaging.