The invention relates to a raman spectrum-based fast measurement method for a motile sperm deoxyribonucleic acid (DNA). The invention adopts the following technical scheme: collecting a semen sample by a test tube; naturally liquefying semen in a room-temperature environment; absorbing the liquefied semen and adding to a centrifugal tube containing density gradient centrifugate; absorbing upper seminal plasma after centrifuging, discarding, then adding a PBS buffer solution and centrifugally washing again; absorbing supernatant, discarding, adding the PBS buffer solution to prepare a sperm suspension, and incubating; attaching a metal bottom plate to a culture dish; adding the PBS buffer solution, and absorbing the incubated sperm suspension, soaking in the culture dish, wherein the sperm swims outside and contacts the metal bottom plate; setting a spectrum response range, integrating time and the excitation light wavelength, so as to obtain raman spectrum data from the head part of the sperm. The motile sperm swimming out from the pointed-end part of a sucker can be attached to the metal bottom plate by operation of a thin tube pipette, and the damage condition of the sperm DNA is evaluated by measuring the sperm of which the head is attached to the metal bottom plate.