The invention provides a curved-surface casing, comprising a casing body that is of curved surface; the casing body comprises a base layer and a connection layer; the base layer is of curved surface; a first layer of pattern is arranged in the base layer; the base layer is mounted at the surface of an object to be mounted through the connection layer. The invention also provides a forming process of the curved-surface shell. The forming process of the curved-surface casing provides glass relief appearance with multilayer pattern decoration, stereoscopic impression and fashion, and good attraction and high grade; the casing has high surface hardness, good integral strength and good structural stability, meets customizing needs, is detachable and is waterproof and crashproof. The cured-surface casing is ingenious in structure and technically reasonable, and has good market application prospect and commercial value.