Provided is a biological material measurement device of a non-invasive type with which it is possible to measure the amount of a biological material stably and with high accuracy. This biological material measurement device 80 is provided with: a first light source 32 which emits first light; an ATR prism 20 which has a front surface and a rear surface, and in which the first light coming in from one end is transmitted and emitted from the other end; a hyperbolic metamaterial layer 90 which has a front surface and a rear surface, and which is disposed so as to have the rear surface thereof come into contact with the front surface of the ATR prism 20; and a first light detector 30 which detects the first light emitted from the ATR prism 20, wherein the amount of a biological material in a living organism is measured from the detected first light.
BIOLOGICAL MATERIAL MEASUREMENT DEVICE