Disclosed are a blood glucose monitoring method and a PPG-based blood glucose monitoring device for same in which a reference sample is prepared by means of preparing a human body substitute dummy and reference blood from which blood glucose is removed and applying quasi-blood to the dummy, the signal amount of each wavelength band with respect to the reference sample to which the reference blood is applied is measured by means of a blood glucose monitoring device, reference signal amount data is obtained and provided as basic data, irradiation light of a plurality of light sources is radiated on a body part of a subject for blood glucose monitoring by means of the blood glucose monitoring device of the present invention, a light-receiving element receives reflected light and scattered light and thus the signal amount of each wavelength band is obtained, a differential signal amount for each wavelength band, which is a corresponding reference signal amount for each wavelength band comprised in the basic data subtracted from the signal amount for each wavelength band with respect to the body part of the subject for blood glucose monitoring, is obtained, and a blood glucose amount corresponding to the differential signal amount for each wavelength band is calculated by means of the correlation between the differential signal amount for each wavelength band and the blood glucose amount.L'invention concerne un procédé de surveillance de la glycémie et un dispositif de surveillance de la glycémie basée sur la PPG pour celui-ci, dans lequel un échantillon de référence est préparé au moyen de la préparation d'un mannequin substitut de corps humain et de sang de référence duquel le glucose sanguin est retiré et l'application de quasi-sang au mannequin, la quantité de signal de chaque bande de longueur d'onde par rapport à l'échantillon de référence auquel le sang de référence est appliqué est mesurée au moyen d'un dispositif de surveillance de la glycémie, des données de qu