The invention discloses a fiber-reinforced light or water curing prepreg winding belt. The winding belt comprises polyurethane elastomers and a grid fiber fabric, wherein two sides of the grid fiber fabric are respectively soaked with the polyurethane elastomers so as to form a two-membrane one-core structure; the winding belt is spirally wound on the surface of a metal component with a round section, and two winding modes are provided; when the winding belt is cured by natural illumination or ultraviolet irradiation, an overlapped winding mode is adopted for the winding belt; and when the winding belt is cured by water spraying, the winding belt is not overlapped, and an adjacent winding mode is adopted for forming a fully-sealed anti-corrosion sheath system. The winding belt disclosed by the invention can be used for anti-corrosion protection of steel pipes, steel bars, concrete piles and suspension bridge main cables, has the advantages of sealing performance, corrosion resistance, ageing resistance, convenience in construction, convenience in maintenance and replacement and the like, can avoid the problem that a traditional anti-corrosion sheath easily causes cracks, and is especially suitable for corrosion protection of components with higher requirements for fatigue resistance.