A distance-measuring apparatus is disclosed. The distance-measuring apparatus includes: an emitter, emitting a light to be measured toward a target, a receiver, receiving a reflected emitted light; a reflector, reflecting the emitted light to the receiver; a condensing lens, condensing the reflected emitted light, reflected by the target to the reflector; a driving module, adjusting the inclination angle of the reflector; and a control unit, controlling the driving module to rotate according to a result of comparing the intensity of the emitted light received by the receiver and a predetermined value.