Abstract:In this paper, a three-dimensional finite element model is established for northwest Yunnan province. The tectonic stress field of the area is simulated by using 2009~2016 GPS velocity field data as the displacement boundary condition of numerical simulation. The results show that: Chuxiong to the northwest of Yunnan province shows overall tensional stress; in the area circled by Eryuan-Heqing, Honghe, Chenghai faults, the internal tensile stress is significantly lower than that of the outside; the low value area, especially around the boundary fault, is often in areas of frequent crustal faulting; the north of Qujiang fault and the south of Lüzhijiang fault present a tensional stress concentration zone, which will be focused on in the future.