Abstract: In order to discuss the dynamic response characteristics of geogrid reinforced embankment in saturated soft subgrade, numerical models for the interaction system of geogrid reinforced embankment and saturated soft subgrade were established to investigate the effects of the reinforcement mode, the elastic modulus of geogrid, the geogrid spacing and the properties of embankment filler on the dynamic response of geogrid reinforced embankment. The numerical results show that the increasing elastic modulus of geogrid can significantly improve the dynamic performance of embankment when the geogrid is close to the bottom of embankment; the reinforcement effect decays with the increase of geogrid layers; the increasing internal friction angle and cohesion of embankment filler can improve the dynamic performance of geogrid reinforced embankment and the effect attenuates when material parameters reach to certain values.