A mobile terminal comprising: a rear housing, comprising a first surface, a second surface arranged opposite to the first surface, and a side circumference connected between the first surface and the second surface, wherein the side circumference comprises a first side circumference, a second side circumference arranged opposite to the first side circumference, a third side circumference and a fourth side circumference arranged opposite to the third side circumference; the third side circumference is connected between one end of the first side circumference and one end of the second side circumference at one side, and the fourth side circumference is connected between another end of the first side circumference and another end of the second side circumference at another side; the second surface is recessed toward the first surface to form a groove; the groove penetrates through the first side circumference; and the groove is located between the third side circumference and the fourth side circumference; a display screen, arranged at one side where the first surface is located; a mounting seat, arranged in the groove and capable of being rotated relative to the rear housing, wherein a rotation axis of the mounting seat passes through a circle center of a circumcircle of an orthographic projection of the mounting seat on a reference plane; and the reference plane is perpendicular to the thickness direction of the mobile terminal; a photographing device, arranged on the mounting seat, wherein the photographing device is provided with a first light entering surface; the mounting seat is capable of being rotated relative to the rear housing through a first position and a second position; when the mounting seat is at the first position, the photographing device is located in the groove and the first light entering surface is shielded by the display screen; and when the mounting seat is at the second position, the photographing device is located out of the groove and the first light entering surface is exposed from one side where the display screen is located; and a guide rail, arranged on the mounting seat, wherein a guide groove is formed on the rear housing; and the guide rail and the guide groove are in slide fit so that the mounting seat is capable of being rotated relative to the rear housing. a rear housing, comprising a first surface, a second surface arranged opposite to the first surface, and a side circumference connected between the first surface and the second surface, wherein the side circumference comprises a first side circumference, a second side circumference arranged opposite to the first side circumference, a third side circumference and a fourth side circumference arranged opposite to the third side circumference; the third side circumference is connected between one end of the first side circumference and one end of the second side circumference at one side, and the fourth side circumference is connected between another end of the first side circumference and another end of the second side circumference at another side; the second surface is recessed toward the first surface to form a groove; the groove penetrates through the first side circumference; and the groove is located between the third side circumference and the fourth side circumference; a display screen, arranged at one side where the first surface is located; a mounting seat, arranged in the groove and capable of being rotated relative to the rear housing, wherein a rotation axis of the mounting seat passes through a circle center of a circumcircle of an orthographic projection of the mounting seat on a reference plane; and the reference plane is perpendicular to the thickness direction of the mobile terminal; a photographing device, arranged on the mounting seat, wherein the photographing device is provided with a first light entering surface; the mounting seat is capable of being rotated relative to the rear housing through a first position and a second position; when the mounting seat is at the first position, the photographing device is located in the groove and the first light entering surface is shielded by the display screen; and when the mounting seat is at the second position, the photographing device is located out of the groove and the first light entering surface is exposed from one side where the display screen is located; and a guide rail, arranged on the mounting seat, wherein a guide groove is formed on the rear housing; and the guide rail and the guide groove are in slide fit so that the mounting seat is capable of being rotated relative to the rear housing.