The effect of earthquake actions on deep highway tunnel lining is investigated by numerical simulation using the finite element method（FEM） code MIDAS/GTS with the emphasis on the ground motions in unidirection,bidirections and on the gravity load.The acceleration time history obtained from the tunnel site with exceedance probability of 10% in 50 years is corrected with baseline before as input into simulation.The simulated results indicate that the response of tunnel lining under bidirectional seismic actions is bigger than those under unidirectional seismic action,where the arch springing and crown are the most dangerous positions under seismic forces.The combined actions of longitudinal and vertical directions will produce the biggest responses in tunnel lining.The impact of earthquake for deep tunnel can not be ignored.