Abstract:The Sichuan-Yunnan region located on the southeast margin of the Qinghai-Tibet plateau and east of the stable south China block, has a very complex tectonic setting. A lot of experience was accumulated by using GPS observation data in order to analyze the movement characteristics of the main faults. Based on the GPS observation data in east boundary of the Sichuan-Yunnan block during 2009-2015 and the slip rates of the major faults in the study area were calculated by using the block model and GPS profile method, respectively. Additionally, the recent movement characteristics of the faults were analyzed by combining them with the time series of the regional strain across the fault zone. The results show that, from the GPS perspective of velocity change, the velocity field during the period 2013-2015 in the north-east part of the Sichuan-Yunnan block exhibited an eastbound increase with a very slight change. From the perspective of the slip rate, the sinistral strike-slip movement and the tensile movement in the northern part of the Xianshuihe fault increased. The left-lateral strike-slip movement in the Xiaojiang fault was, in general, slightly enhanced. From the perspective of the regional strain time series after removing the linear trend, the principal tension strain of the southern section of the Xiaojiang fault exhibited a trend reversal at the end of 2014, and this should be investigated further in future work.