Using statistics method,Fourier transform infrared(FTIR) spectroscopy was applied to the study of the spectrum of the powder of cancerous tissues and normal tissues near the cancer of the lung.The results showed that there were significant differences in the FTIR spectra between the normal and malignant pulmonic tissues: the peak at 3306cm-1 of N-H shifted 3cm-1 to short wavenumber in cancerous tissues,the peak at 1167cm-1 of C-OH shifted 6 cm-1 to long wavenumber in cancerous tissues,the peak at 1080 cm-1 ...