Abstract: The present application relates to a protective leather case and a positioning device for protecting a smart terminal. The protective leather case includes a leather layer; an adhesive layer; and a positioning release film including a first release film and a second release film. The leather layer, the adhesive layer and the positioning release film are laminated sequentially. The first release film is provided in a first direction. At least two second release films are provided, and are arranged on both sides of the first release film in a second direction perpendicular to the first direction. The protective leather case can be used to facilitate accurate positioning and lamination between the protective leather case and the smart terminal.