A smart headlight includes a headlight mount, a main light source, a lens and a light-shielding structure. The main light source is disposed on the headlight mount. The lens is connected to the headlight mount and corresponds in position to the main light source. The light shielding structure is disposed on the headlight mount and arranged between the main light source and the lens. The light shielding structure includes a first light-shielding plate and a second light-shielding plate. The first light-shielding plate is configured to reciprocally move between an upright position and a reclined position, such that a top portion of the second light-shielding plate can be covered by or exposed from the first light-shielding plate.