The invention discloses a light high-
toughness fiber concrete prefabricated part which comprises a prefabricated part body, the prefabricated part body comprises an outer stabilizing layer, a light reinforcing part and a light
toughness layer, a containing groove is formed in the prefabricated part body, the light reinforcing part and the light
toughness layer are located in the containing groove, and the light reinforcing part penetrates through the light toughness layer. The structure of the tunnel concrete prefabricated component for reinforcing and repairing is improved, the outer layer of the tunnel concrete prefabricated component is the stable layer, the containing groove is formed in the stable layer, the light reinforcing piece composed of the transverse steel pipes and the longitudinal steel pipes is arranged in the containing groove, and the light ductile
layers are filled in the light reinforcing piece and the containing groove; the light tough layer is mainly composed of a
cement base, light aggregate, fibers, steel pipes and the like, the outer stable layer is mainly composed of a
cement base, heavy aggregate, fibers, steel pipes and the like, and compared with a traditional concrete prefabricated part, the weight of the structure is greatly reduced, meanwhile, the overall stability is not affected, and the labor intensity of manual carrying is reduced.