Abstract：Based on dynamic test and wave velocity data of loess，the statistic relationship between shear wave velocity and seismic subsidence of loess is established. The prediction method of seismic subsidence of loess ground is proposed. The calculation result of seismic subsidence of loess ground under different seismic intensities，especially that of reversed value from Yongdeng earthquake shows that the value of seismic subsidence with normalized water content has a close relationship with shear velocity and dynamic stress，and the relationship can be used to assess the seismic subsidence of loess ground.
