Abstract: Taking the Third Nanjing Yangtze River Bridge as an engineering background,a pile-cap pier model was designed and built by using the similar principles with a scale factor of 1∶50.A shaking table test of this pier model was carried out by loading a sine wave and Tianjin wave in the two cases around water and around air.The result showed that the largest rate of acceleration increased from 20% to 40% under different waves,and the displacement and strain increased accordingly.The curves of earthquake hydrodynamic pressure along pile height indicated that the distribution of pressure was relevant to the intensity of earthquake waves.