Since the 1980s,GNSS technology has made rich achievements in high-precision crustal movement observation and tectonic deformation research,which provides strong technical support for application expansion in many fields such as geodesy,geodynamic research,earthquake prevention and disaster reduction. This paper reviews the development of the GNSS network of crustal deformation in Chinese Mainland,and expounds several basic products produced by the network,such as the long-term tectonic movement velocity field in Chinese Mainland,the strain rate field in Chinese Mainland,the displacement time series,the baseline time series and the polygonal strain time series. We analyzed the application of these products in the dynamic trend of tectonic movement in Chinese Mainland and earthquake prediction,as well as the bottleneck problems faced. Finally,the application of GNSS in high-precision crustal movement monitoring in the future is prospected. Based on the Crustal Movement Observation Network of China(CMONOC),developing the sharing of massive domestic GNSS observation data and improving the fusion positioning accuracy of multi-GNSS will produce more sophisticated scientific products,which can better serve the research of crustal movement in Chinese Mainland and earthquake prediction.