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The compressional(Vp) and shear wave velocities(Vs) of natural eclogite samples were measured up to 2.0 GPa at room temperature,and in the temperature range from ambient temperature to 700℃ at fixed pressures of 1.0 and 2.0 GPa,respectively,utilizing ultrasonic reflection-transmission method with a large volume press(YJ-3000 ton) at Laboratory for High Temperature & High Pressure Study of the Earths Interior,Institute of Geochemistry,CAS.The rock cores were drilled and polished into cylinders having a dimension of 10.5 mm in diameter and~6 mm in height.There was no obvious orientation in the hand specimens.