An antenna includes a metal frame including a radiation frame with a first grounding point, and a grounding frame separated from the radiation frame; a mainboard including a system ground and a feeding end, the system ground including a first and second ground point; a diversity antenna unit including a feeding point and a second grounding point; and a conductive bracket; a front-facing camera is mounted on the mainboard; a gap is between the radiation frame and the grounding frame, the first ground point and the second ground point are at two opposite sides of the camera, respectively; the feeding point is connected with the feeding end, the second grounding point is connected with the system ground; one end of the conductive bracket is connected with the first ground point, and the other end is connected with the second ground point, so that the conductive bracket crosses the camera.