This invention department is one kind because of the induction vehicle speed and the light induction type headlight of illumination range control method, mainly because of a vehicle speed sensory element before a vehicle vehicle speed of the luminosity sensory element induction transportation vehicle luminosity of with the front, and judged and rests on at that time the vehicle speed because of a controller with the front luminosity condition, controlled a horse to attain moves impels the transportation vehicle headlight to reflect the cover to make illumination of distance the immediate response adjustment headlight, reduced the driver manual cut to be far, low-beam lights' inconvenient, enhanced when the night driving secure method.