Provided is a body fluid analysis device which can accurately measure occult blood in a body fluid such as urine, etc., even if hemolysis is occurring. The body fluid analysis device is characterized by comprising: a light source irradiating light, which has a first wavelength and a second wavelength that are different from each other, onto the body fluid； a detector receiving the light, which was emitted from the light source and which passed through the body fluid, and detecting the intensity of said light； a normalization unit calculating a ratio of the light intensity of the second wavelength with respect to the light intensity of the first wavelength, which were detected by the detector； and a calculation unit calculating, on the basis of the ratio which is calculated by the normalization unit, the content of a prescribed component which is included in the body fluid.本發明提供即便尿等體液發生溶血時亦能準確地測定潛血度之體液分析裝置。本發明的體液分析裝置之特徵在於具備：光源，對體液照射互不相同的第一波長及第二波長之光；檢測器，接收從該光源所射出且透過前述體液之光並檢測該光之強度；歸一化部，算出由該檢測器所檢測之前述第二波長之光強度相對於前述第一波長之光強度的比例；以及算出部，基於該歸一化部已算出之前述比例來算出前述體液所含的預定成分之含有率。
