The pulse sense of PVDF is used to collection pulse signals of subjects into computer and store them in data file style. The author select a series of pulse signals randomly which contains 40 consecutive cardiac cycles of subject and using a modern spectrum analysis method to estimate the power spectrum of data in every cardiac cycle.An average power spectrum is obtained through averaging such 40 power spectra. It is found that the significant difference of power distribution exists between the heroin addicts and the healthy person. The frequency axis of average power spectrum. Calculating the power distributions on specified frequency bands of the average power spectrum for every subject is carved up.A primary criterion is obtained. The above criterion is applied to 30 subjects including 15 heroin addicts and 15 healthy persons. The correctness of classifying heroin addicts and healthy persons arrives 93.3%.The result shows that the modern spectrum analysis method is really an effective measure to analyze pulse abnormalities of heroin addicts.