The invention discloses a fingerprint measurement device, a fingerprint identification method and system and a medium. The fingerprint measurement device comprises a light generation unit, a light splitting unit, a reflection unit, a measurement unit and a photoelectric sensing unit, wherein the light generation unit generates a first light signal which is incident to the light splitting unit in parallel; The light splitting unit divides the first optical signal into a second optical signal and a third optical signal which are perpendicular to each other, allowing a second optical signal to beincident to the measuring unit, allowing the third optical signal to be incident to the reflecting unit, receiving a fourth optical signal obtained by scattering of the measuring unit, receiving a fifth optical signal reflected by the reflecting unit, transmitting the fifth optical signal to the photoelectric sensing unit; the photoelectric sensing unit performs photoelectric conversion to generate fingerprint measurement and output the fingerprint measurement result. According to the scheme provided by the embodiment of the invention, the requirement on the fingerprint identification fingersurface is reduced, and the fingerprint identification success rate is improved.