The present invention relates to a method for measuring underwater acoustic holography in detail considering acoustic characteristics at the contact surface between air and water, and applying a condition that the sound pressure at the surface becomes zero using a plurality of vertical array underwater acoustic sensors. The present invention relates to a method for calculating underwater acoustic holography considering reflection waves of air and water contact surfaces capable of visualizing sound fields.;The configuration of the present invention for this purpose is to convert an underwater sound source for outputting a predetermined sound, at least one vertical array sensor for detecting the sound generated from the underwater sound source, and the detection signal output from the vertical array sensor to an analog signal A sound holography system comprising a multi-channel converter, a sound pressure distribution predicting means for predicting a sound pressure distribution by analyzing the converted signal applied from the multi-channel converter, and a display for displaying the sound pressure distribution calculated by the sound pressure distribution predicting means. In the sound pressure distribution predicting means has a virtual sound source having a phase difference of 180 degrees with the underwater sound source on the surface of water and air contact with the condition that the virtual sound pressure of the same size as the sound source of the underwater sound source and the opposite sign is formed The wavenumber of the sound pressure measurement surface by the negative operation of the virtual sound source from the actual sound source A characterized in that it calculates the sound pressure distribution in an actual space and calculating functions.;Holography, underwater sound, reflected wave, virtual sound source
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