Based on the investigation of the geology literature, we built a 3-D finite element model of the northeastern Bayan Har block. With the model by the coseismic dislocation, the loading or unloading effects of the Jiuzhaigou earthquake on the activity faults around the northeastern Bayan Har block is simulated in this paper. The results show that impacted by the Jiuzhaigou earthquake, the Coulomb stress increased significantly on the west segment of Tazang Fault and Huya Fault and decreased on the Minjiang fault and the east segment of Tazang Fault. There are also some degrees of Coulomb stress loading on the east segment of Dongkunlun Fault, the Longriba fault, the west segment of Pingwu-Qingchuan fault, the west and east segment of Diebu-Bailongjiang fault, the east segment of Lintan-Tanchang fault and the east segment of Xiqinling Fault.