To provide a method which conducts automatic measurement of noise automatically and effectively eliminates covering sound, in the analysis of aircraft noise data.

In the method for analyzing and processing aircraft noise data, noise data obtained by an arbitrary measuring station on an arbitrary day are sorted, in the descending order of noise level waveforms, and displaying on a display device is carried beginning with from the largest noise level waveform, and/or they are reproduced by an acoustic reproducing device; and only the noise level waveforms which are not less than a numerical value obtained by multiplying a noise evaluation value, such as WECPNL value, LAeq value or the like by a prescribed certain contribution ratio, are observed visually by the operator; and noises other than aircraft noises are decided and eliminated therefrom.