The present invention relates to measuring real-time blood sugar by using multiple biological signals, and relates to a blood sugar measurement method and a blood sugar measurement device using multiple biological signals, the blood sugar measurement device comprising: a main body wearable on a human body a first light source unit formed on the inner surface of the main body so as to be in contact with the human body by the wearing of the main body a second light source unit formed on the inner surface of the main body and emitting light in the same direction as a light emitting direction of the first light source unit a light-receiving unit for receiving the light of the first light source unit and the second light source unit and a computation unit for computing a glucose level in the blood by receiving the intensity of the light received by the light-receiving unit, and for measuring blood sugar by using the computed glucose level, and by which blood sugar is non-invasively estimated using a characteristic in which a degree of light absorption of glucose varies according to a blood sugar level and the estimated blood sugar is corrected by a heterogeneous blood sugar measurement method.
