The invention discloses an isometric spiral multipoint ultraviolet spectrum cryopreserved serum analyzer. The analyzer is composed of a machine body and internal components arranged in the machine body, wherein the internal components mainly include a Raspberry Pi, an ultraviolet raman laser, an ultraviolet raman probe, a spectrograph, a sample chamber, a direct-current stabilized power supply, atouch screen, a liquid nitrogen pump, a liquid nitrogen bottle, an electric controlling and moving assembly and an auxiliary component. The isometric spiral multipoint ultraviolet spectrum cryopreserved serum analyzer disclosed by the invention has the advantages that a mode that the flow is controlled by an electric valve and the liquid velocity is controlled by the liquid nitrogen pump is utilized, and low-temperature and constant-temperature control in an inner cavity is achieved; thus, test environment uniformity is ensured, and test repeatability is ensured; for a cryopreserved serum sample test, constant-low-temperature isometric spiral multipoint ultraviolet raman fluorescence spectra collection is performed, principal component analysis is performed on spectrum mean vectors and spectrum variance vectors, contingency and deviation of a single-point test are eliminated, and recognition rates of different species of serums can be effectively improved.