Abstract: The acoustic performance of transducer (i. e. focusing feature) is one of most important specifications of therapeutic ultrasound system. It should be characterized before delivery and in routine maintenance. Currently, the acoustic pressure is measured by using common hydrophone. However, the measurement of high acoustic pressure is limited, and the acoustic power meter with large range is expensive. Instead, the surface vibration measurement using acoustic holography method can be used to obtain the planar distribution at a low acoustic pressure and then indirectly reconstruct the focal area at high acoustic pressure. In order to evaluate the accuracy of acoustic holography method, the acoustic field at low pressure is measured and reconstructed, and the power and pressure errors between this method and the measurements using hydrophone, as well as the error sources, are analyzed. The results have demonstrated that the reconstruct acoustic field using acoustic holography method is consistent with the measurement result by using hydrophone, and so it is possible to use this method for characterizing the performance of transducer working at high acoustic pressure.