A protective case for a mobile terminal, the mobile terminal comprising a middle frame, a slider slidable relative to the middle frame, and an electronic assembly disposed in the slider; the protective case comprising: a first shell having a body portion and a rim portion; wherein the rim portion is fixed to a periphery (211, 212) of the body portion; and a second shell having a strength less than a strength of material of the first shell; wherein the second shell is fixed to an inner side of the rim portion that faces towards the body portion, such that a receiving space configured to receive the mobile terminal is defined by the first shell and the second shell; wherein the periphery (211, 212) of the body portion comprises: a first straight edge, connected to the rim portion; a second straight edge, disposed opposite to the first straight edge and connected to the rim portion; and a first edge, disposed between the first straight edge and the second straight edge and disconnected to the rim portion; characterized in that the first shell is made of Kevlar and the second shell is made of polyurethane; wherein the first edge comprises a central region and two edge regions connected to two opposite ends of the central region; wherein the central region is recessed in a direction towards a middle of the body portion with respect to the two edge regions, and a transmission area is defined by the central region and the edge regions; and wherein, when the slider retracts into the middle frame, the electronic assembly is hidden in the middle frame; and when the slider extends out of the middle frame, the electronic assembly is exposed out of the protective case via the transmission area. a first shell having a body portion and a rim portion; wherein the rim portion is fixed to a periphery (211, 212) of the body portion; and a second shell having a strength less than a strength of material of the first shell; wherein the second shell is fixed to an inner side of the rim portion that faces towards the body portion, such that a receiving space configured to receive the mobile terminal is defined by the first shell and the second shell; wherein the periphery (211, 212) of the body portion comprises: a first straight edge, connected to the rim portion; a second straight edge, disposed opposite to the first straight edge and connected to the rim portion; and a first edge, disposed between the first straight edge and the second straight edge and disconnected to the rim portion; a first straight edge, connected to the rim portion; a second straight edge, disposed opposite to the first straight edge and connected to the rim portion; and a first edge, disposed between the first straight edge and the second straight edge and disconnected to the rim portion; characterized in that the first shell is made of Kevlar and the second shell is made of polyurethane; wherein the first edge comprises a central region and two edge regions connected to two opposite ends of the central region; wherein the central region is recessed in a direction towards a middle of the body portion with respect to the two edge regions, and a transmission area is defined by the central region and the edge regions; and wherein, when the slider retracts into the middle frame, the electronic assembly is hidden in the middle frame; and when the slider extends out of the middle frame, the electronic assembly is exposed out of the protective case via the transmission area.