In order to study the gravity secular trend in Western China,using the gravity field models derived from Gravity Recovery and Climate Experiment(GRACE),the local gravity field in western China were constructed based on spatio-spectral concentration solution.Then,the GIA,GLDAS models were used to deduct the corresponding errors.Finally,the satellite gravity gravity secular trend in this region from form January 2003 to December 2013 was obtained through the time series analysis.Results show that,in eastern Tianshan Mountains,the negative gravity trend may be caused by glacial ablation.Meanwhile,the positive gravity variation in western Tianshan Mountains may not only concerned with the slightly increase or steady state of regional glaciers,but also is likely to be caused by crust-mantle substance accumulation due to crustal movement.The inland of Qinghai-Tibet Plateau present an obvious positive gravity trend,which may related to the crust uplift, the crust-mantle mass migration and the crustal tectonic strain in these region.Along the boundary area of Qinghai-Tibet Plateau,the negative gravity trend may be concerned with the accelerate glacial loss and the extraction of underground water.The spatio-spectral concentration solution can overcome the signal compression and details smoothness caused by the smoothing mehods,the results provide data support for studies on crustal movement, seismic activity and climate change in Western China.