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Disclosed in the present invention are a neodymium-iron-boron magnet material, a raw material composition thereof, a preparation method therefor, and an application thereof. The raw material composition of the neodymium-iron-boron magnet material contains : a first component : a light rare earth element (LR), wherein the LR comprises : Nd; Ho : 0-10 mas%, not including 0 mas%; Cu : 0.35-0.6 mas%; C : 0-0.32 mas%; Ga : 0-0.42 mas%, not including 0 mas%; Co : 0-0.5 mas%; Al : 0-0.5 mas%; X : 0.05-0.5 mas%; B : 0.9-1.05 mas%; and the balance of Fe, and the first component does not comprise other heavy rare earth elements in addition to Ho; and a second component : Dy and/or Tb : 0.2-1 mas%. The neodymium-iron-boron magnet material in the present invention has good grain boundary continuity, high remanence, high coercivity, excellent high-temperature performance, and excellent corrosion resistance.