Abstract: Many initial tailings dams are impervious in China, then, the seepage line is very high, and most sands are saturated in tailings pond. Under the action of dynamic force, the dynamic properties of tailings sands have vital importance for safety stability of tailings pond. Using electron-hydraulic dynamic triaxial apparatus, liquefaction tests are conducted, the dynamic properties of various sands in tailings pond are studied. Finally, the influence factors on liquefaction of saturated sands in tailings pond are discussed.