A urine specimen analysis device, comprising: a specimen drawing portion for drawing a first aliquot and a second aliquot from a urine specimen; a sample preparing portion for preparing a first measurement sample by mixing the first aliquot and a first staining dye that stains red blood cells, and preparing a second measurement sample by mixing the second aliquot and a second staining dye that stains nucleic acids; a measurement portion for measuring fluorescence emitted from the first measurement sample prepared by the sample preparing portion, and measuring fluorescence emitted from the second measurement sample prepared by the sample preparing portion; and an information processing portion for detecting at least red blood cells contained in the first aliquot based on the fluorescence of the first measurement sample measured by the measurement portion, and detecting at least white blood cells contained in the second aliquot based on the fluorescence of the second measurement sample measured by the measurement portion, wherein the measurement portion includes: a flow cell for allowing a measurement sample to flow therethrough; a light source for emitting light on the measurement sample that flows through the flow cell; a fluorescence receiving portion for receiving fluorescence emitted from a particle in the measurement sample, and outputting a fluorescence signal; and a scattered light receiving portion (55, 58) for receiving scattered light emitted from a particle in the measurement sample, and outputting a scattered light signal, wherein the measurement portion can amplify a signal of fluorescence received by the fluorescence receiving portion at a plurality of sensitivities, and the information processing portion is configured to detect white blood cells contained in the second aliquot, based on a fluorescence signal amplified at a low sensitivity, and detect in-urine particles smaller than white blood cells contained in the second aliquot, based on a fluorescence signal amplified at a high sensitivity. a specimen drawing portion for drawing a first aliquot and a second aliquot from a urine specimen; a sample preparing portion for preparing a first measurement sample by mixing the first aliquot and a first staining dye that stains red blood cells, and preparing a second measurement sample by mixing the second aliquot and a second staining dye that stains nucleic acids; a measurement portion for measuring fluorescence emitted from the first measurement sample prepared by the sample preparing portion, and measuring fluorescence emitted from the second measurement sample prepared by the sample preparing portion; and an information processing portion for detecting at least red blood cells contained in the first aliquot based on the fluorescence of the first measurement sample measured by the measurement portion, and detecting at least white blood cells contained in the second aliquot based on the fluorescence of the second measurement sample measured by the measurement portion, wherein the measurement portion includes: a flow cell for allowing a measurement sample to flow therethrough; a light source for emitting light on the measurement sample that flows through the flow cell; a fluorescence receiving portion for receiving fluorescence emitted from a particle in the measurement sample, and outputting a fluorescence signal; and a scattered light receiving portion (55, 58) for receiving scattered light emitted from a particle in the measurement sample, and outputting a scattered light signal, a flow cell for allowing a measurement sample to flow therethrough; a light source for emitting light on the measurement sample that flows through the flow cell; a fluorescence receiving portion for receiving fluorescence emitted from a particle in the measurement sample, and outputting a fluorescence signal; and a scattered light receiving portion (55, 58) for receiving scattered light emitted from a particle in the measurement sample, and outputting a scattered light signal, wherein the measurement portion can amplify a signal of fluorescence received by the fluorescence receiving portion at a plurality of sensitivities, and the information processing portion is configured to detect white blood cells contained in the second aliquot, based on a fluorescence signal amplified at a low sensitivity, and detect in-urine particles smaller than white blood cells contained in the second aliquot, based on a fluorescence signal amplified at a high sensitivity.