A smart mirror and a control method thereof are provided. The smart mirror includes a rear cover; a display screen disposed on the rear cover and configured to display preset information; a lighting circuit disposed on the rear cover and configured to emit illumination beam; a distance sensing circuit disposed on the rear cover and configured to sense distance of a user in a target area; a control circuit disposed on the rear cover and electrically connected with the display screen, the lighting circuit and the distance sensing circuit, and configured to start one of the display screen and the lighting circuit according to the distance sensed by the distance sensing circuit; a display mirror surface that is disposed on the rear cover and only covers the display screen.