A protective cover for an electronic device includes a main body having a plurality of edges and an integral frame vertically extending from the plurality of edges of the main body and surrounding the main body. The main body and the integral frame form a first shell and a second shell, and the first shell and the second shell are connected by a flexible connecting portion, so that the second shell is able to rotate outward when the flexible connecting portion is stretched, to form an angle between the second shell and the first shell. Thereby a standing base, is formed to support the electronic device.