A screen assembly and a mobile terminal (100) are provided. The screen assembly includes a frame (1) and a screen (2), the screen (2) being arranged on the inner side of the frame (1), the screen (2) being able to move relative to the frame (1) between a first position and a second position along a thickness direction of the screen (2); the screen (2) moves towards the interior of the frame (1) from the first position to the second position in a drop process of the mobile terminal (100), and a bottom surface of an edge of the screen (2) is completely accommodated in the frame (1) when the screen (2) is in the second position.