Abstract: Using cross-fault observation data in the Xianshuihe fault belt and Longmenshan fault belt, we studied the deformation characteristics of the eastern part of the BayankaLa block before and after the Lushan earthquake. The results show that:1) Geloubazi, Goupu, Laoqianning, Longdengba, Xuxu, Zhuwo and Baoxing reflect the earthquake better. 2) The Xianshuihe fault belt and the Longmenshan fault belt in the eastern part of the BayankaLa block has a higher activity than the perennial background value before and after the earthquake, the former is based on the acceleration of the strike slip motion, and the latter is based on the acceleration of the pressure; The eastern part of the block shows that the feature of rotational acceleration movement to the Southeast. 3) After the Wenchuan earthquake and Lushan earthquake, tectonic stress from the collision of Indian plate and Eurasian plate accumulated continuously in the "three road" and "seismic gap" area, and the seismic risk of these regions should be strongly concerned.