Abstract: A one-piece magnetic attraction type mobile phone protection shell is provided, including a back plate, and a covered edge formed on the back plate at one time through secondary injection molding. The covered edge builds, along a circumferential edge of the back plate, a groove-shaped structure into which a smartphone is embedded; the back plate has a base plate, a surface plate that covers and is fitted to a top surface of the base plate, and a bottom plate that covers and is fitted to a bottom surface of the base plate; a hollow part is arranged on the base plate; a magnetic sheet subassembly flush with the base plate is embedded into the hollow part; and the magnetic sheet subassembly is clamped and fixed in the hollow part by the surface plate and the bottom plate.