A breast measurement apparatus includes a distance measurement unit measuring a distance from a skin to a light absorption portion for a measurement region of a breast which is a normal region including no tumor or an object region including a tumor, a light measurement unit measuring a hemoglobin amount in the measurement region by a light measurement method using measurement light of a predetermined wavelength, a correlation data storage unit storing normal correlation data of the distance to the light absorption portion and a normal hemoglobin amount generated based on measurement results for normal regions, and an evaluation value calculation unit calculating a property evaluation value of the tumor based on the normal hemoglobin amount, obtained from the normal correlation data and the distance to the light absorption portion in the object region, and an object hemoglobin amount in the object region.