We have compared the different compositions of the blood for cancer patient with the composition of the same kind of the healthy person. To discover the spectra of them present obvious difference and the spectra for the blood of the different kind of the patient also present obvious differece, but the spectra of the specifieness compositions for earlier peiod cancer disease is same which close to spectrum of the That the method is used in the earlier period diagnoses is maybe the most good and can bo used in checking widely. It is not only simple but also quick.