The invention provides a protection cover plate and a manufacturing method thereof. The protection cover plate comprises a substrate, an optical film and a shielding layer. The substrate comprises a flat part and a bent part which is arranged on at least one side of the flat part. The optical film is arranged on the flat part and exposes at least part of the bent part. The shielding layer is arranged on one side, opposite to the optical film, of the substrate, and the shielding later is provided with an opening so as to expose at least part of the optical film.