The invention relates to a frequency domain correlation analysis method for cardiac mapping signals. The frequency domain correlation analysis method specifically comprises the following steps: electrocardiosignals are obtained with a cardiac mapping technology; power spectra containing dominant frequency peaks are obtained through preprocessing; the power spectra of two signals are correlated, and a correlation coefficient function with frequency as an independent variable is obtained; the maximum correlation coefficient F-Cmax is analyzed, and the frequency at the maximum value, namely, the maximum correlation frequency Ffmax is obtained. The frequency domain correlation analysis method not only can be applied to time dimension, namely, evaluation of the degree of correlation of signal rhythms in different time periods in the same position, but also can be applied to spatial dimension, namely, evaluation of the degree of correlation of the signal rhythms in different spatial positions in the same time period, can be used for studying correlation characteristics of electrical activity rhythms of myocardia in different positions and different time periods of the heart, can be used for analyzing sinus rhythm signals or arrhythmia signals, has certain application value in electrophysiological mechanism research and clinical medicine, and can be extended to quantitative research of all electrophysiological rhythm signals.