Abstract: In this paper, basic philosophy of peak finding by symmetrical zero-areaconversion method is described. We gave a method, in which the symmetricalzero-area fuctions were defined. The effects of finding peaks were comparedfor some symmetrical zero-area fuctions. The computation and experi-ment results show that the effect of finding peaks is best if the conversionfunction is the same as the peak shape fuction (e, g. Gaussian). Finding peakswith this method, first, the conversion of the zero-area Gaussian in "widewindow" (e. g. H=4 W=11) is used to suppress the high background and thefalse peaks such as the statistical fluctuations. Then, the conversion in "narrowwindow" (e. g. H=4 W=5) is used to resolve the multiplets.