Abstract: Soil slope is often performed in engineering projects such as road slope, the slope created by heaping mountain landscape, etc, but at present, the stability evaluation of soil slope under earthquake has not yet mature and reliable standard. Analysis of the stability of slopes under earthquake has been made by FLAC3D. Slopes using hierarchical processing and multi-platforms will be favorable to resisting earthquake. In the soil strength parameters, friction has the greatest impact on the stability of slopes. Hazards on the slopes are much smaller when seismic waves are parallel to the slope than when they intersect the slope.