Bagged sand has been widely used due to its fast construction period,low cost and strong adaptability.However,there are few studies on the liquefaction of bagged sand,especially in high-intensity seismic areas,where bagged sand cannot be compacted like hydraulic fill sand.Under strong earthquake conditions,the liquefaction deformation of bagged sand embankment has become a non-negligible factor,and the liquefaction problem has become a restriction on the promotion and application of bagged sand embankment in overseas high-intensity seismic countries and regions.In this paper,FLAC 3D is used to analyze the dynamic response of the bagged sand embankment under strong earthquakes,such as liquefaction degree and acceleration,and measures to reduce liquefaction are proposed.It can be used as a reference for the promotion and application of bagged sand structure in the Southeast Asian market.