The invention discloses a constant low-temperature hyper-continuous integrated optic spectrum cryopreserved whole blood analyzer which comprises a body and an internal component assembled in the body.The internal component mainly comprises a Raspberry Pi, a hyper-continuous spectrum fiber laser, a spectrometer, a sample room, a liquid nitrogen pump, a liquid nitrogen bottle, a direct current stabilized power supply, a touch screen and an auxiliary part. The analyzer is applicable to detection, recognition, base-building, tracing and protection of cryopreserved whole blood by customs. The analyzer has the advantages that flow is controlled by an electric valve, liquid speed is controlled by the liquid nitrogen pump, an inner cavity is controlled at low temperature and constant temperature,uniformity of testing environments is ensured, so that hyper-continuous transmittance spectrum testing repeatability and uniformity of cryopreserved whole blood samples are improved, deviation causedby a sample temperature rise process in a conventional method can be eliminated, and the recognition rate of the whole blood of different species is effectively increased.