Abstract: Based on the centrifuge shaking table model test, the acceleration response laws and seismic settlement deformation characteristics of undisturbed loess foundation under earthquake load are systematically studied. The results show that the acceleration response of loess foundation exhibits a significant elevation effect. Strong seismic excitation will intensify the softening and relaxation of soil, thereby suppressing the transmission of seismic acceleration. The increase in the thickness of the loess layer enhances the stiffness of the soil, thereby reducing the amplification effects of acceleration. In addition, there is a significant correlation between the seismic subsidence deformation of loess foundation and the waveform of input waves. Along with the loss of the primary structural strength and the generation of the secondary structures, the vertical deformation is the main manifestation, accompanied by the development of tension cracks caused by uneven deformation, and local areas have ground failure phenomena caused by crushing damage.