In a strong earthquake

the liquefaction-induced lateral deformation of ground has induced severe damages to the ground structures and the underground lifeline engineering. It is foreseeable that the safety of subway underground structure is seriously threatened by the seismic liquefaction-induced lateral deformation of ground. For this reason

the earthquake response of a subway underground structure buried in a soil foundation with a slight inclined ground surface was investigated by shaking table tests. The results demonstrated that the soils beside the underground structure were not liquefied synchronously with the soils near the slope toe were easier to be liquefied than the soils near the slope top. When the soils in the slope was liquefied

they would flow down along the slope

which can induce the uplift of the ground surface near the slope toe. Meanwhile

it was found that the lateral deformation of soil in the slope was larger than that of soil near the slope toe

and the lateral deformation of soil near the slope top was smallest. The results also revealed that the underground subway station floated more severely than that of connected tunnel

which could induce seismic damage at the connection part between the tunnel and subway station.