Reservoir-induced earthquakes have the characteristics of shallow focal depth, small magnitude, high frequency and density in the Baitan-Zhilixincun section of the lower reaches of the Jinsha River. The rock mass of the shallow strata is mostly carbonate rock, which is widely distributed. The shallow metamorphic rocks are mainly distributed at the depth of 10 km. In the concentrated area of reservoir-induced earthquakes, the number of secondary faults is relatively large, and they are mainly reverse faults. The stress and strain patterns of the shallow cracks are mainly unloading cracks in the rock mass on the left and right banks of the Baitan-Jiaopingdu section. The main storage characteristics of groundwater are bedrock fissure water and karst fissure water. The rapid impoundment of the reservoir makes the bedrock fissure.