A curved lens and a display device are provided. The curved lens includes a plurality of sub lenses around an optical center of the curved lens and connected; each of the plurality of sub lenses includes a first and second curved surface opposite to each other; a plurality of first curved surfaces are connected to form a light exit surface of the curved lens, and a plurality of the second curved surfaces are connected to form a light incident surface of the curved lens, and the light exit surface is closer to the optical center of the curved lens compared with the light incident surface; the light incident surface as a whole is a convex surface, and the light exit surface as a whole is a concave surface; the plurality of the first curved surfaces and the plurality of the second curved surfaces are free-form curved surfaces.