本文简要地介绍利用激光超声技术对不同工艺条件下所制备的纳米铜、ZrO2和Al2O3纳米陶瓷的声速及相应的杨氏模量的实验测定方法及实验结果．结果表明：对于厚度为100μm－300μm的纳米铜试样，它的声速随成形压力的增高而增大；对于ZrO2和Al2O3纳米陶瓷，在较高的烧结温度下，试样的密度，声速及杨氏模量也随烧结温度的增高而增大，但在较低的烧结温度下，有可能出现异常，在低的烧结温度下，有可能出现较大的声速和杨氏模量． In this paper, the experimental methods and experimental results on the acoustic velocity and corresponding Young’s modulus of nanocrystalline copper, ZrO2 and Al2O3 nanocrystalline ceramics prepared under different technological conditions are briefly introduced by using laser ultrasonic technique. The results show that the acoustic velocity increases with the increase of the forming pressure for the nano-Cu sample with the thickness of 100μm-300μm. For the ZrO2 and Al2O3 nano-ceramics, the density, The Young’s modulus also increases with increasing sintering temperature, but abnormalities may occur at lower sintering temperatures, and larger velocities of sound and Young’s modulus may occur at lower sintering temperatures.