Dam material and overburden dynamic parameters are inversed on the basis of strong earthquake monitoring data of Yele Dam. Then three-dimensional nonlinear finite element analysis is carried out to analyze the dynamic acceleration responses of the dam subjected to its largest earthquake so far(4 earthquake). Liquefaction of the foundation overburden is evaluated in accordance with the results by finite element analysis. Seismic safety of the dam suffered by earthquake is evaluated finally. Rockfill and overburden material models used in static calculation are Duncan E-B model

and Hardin model in dynamic calculation.3D nonlinear finite element earthquake response analysis applies equivalent linearization method.