Three-dimensional nonlinear finite element method is used to calculate the static and dynamic stress-deformation of the 161 m high asphalt concrete-faced rockfill dam in the upper reservoir of a pumped storage power station in the strong earthquake area with seismic intensity of Ⅷ. The results show that the deformation distribution of the dam is reasonable under static conditions. The maximum horizontal displacement and settlement of the dam body are 62.64 and 151.85 cm, respectively, and the maximum tensile strain of the dam face is 0.56% in storage period of the reservoir. Under the effect of the Ⅷ degree seismic action, the maximum dynamic displacement of the dam body in the valley direction, the axial direction and the vertical direction are 22.88, 21.90 and 13.76 cm, the maximum dynamic acceleration rates are 12.31, 12.26 and 12.14 m/s2, and the maximum vertical permanent deformation after the earthquake is 30.01 cm, with the earthquake subsidence rate of 0.19%. The arc section and the junction of excavation and filling are the peak areas of the tensile strain of the concrete face, and the extreme value is 0.85%. In summary, the overall safety performance of the dam is good and there will be no major safety problems during earthquakes.