[Object] To more simply measure a scattering coefficient of an in-vivo component at any measurement location of a living body.[Solution] A measurement device according to the present disclosure includes: a light source configured to emit at least one kind of measurement light belonging to a predetermined wavelength band toward a measurement region formed by at least a part of a living body; a detection unit in which a plurality of sensors are arranged regularly in a predetermined disposition, the detection unit being provided on a same side as the light source with respect to the measurement region and configured to detect reflected light from the living body of the measurement light transmitted through a part of the living body with the plurality of sensors; and an analysis unit configured to analyze scattering characteristics of an in-vivo component present in the living body using a detection result of the reflected light detected by the detection unit.