First, the color temperature cluster of xenon lamp is 3000K to 12000K, where the color temperature of 6000K is similar to that of sunlight, but it contains more green and blue components, so it shows blue and white light. The blue and white light increases the brightness of road signs and signboards. Two, HID has three times higher brightness efficiency than halogen lamps. It has a significant effect on improving the clarity of driving vision at night and in fog. Three, the luminous flux of the xenon lamp is more than 3 times that of the halogen lamp, and the efficiency of electric energy conversion to light energy is more than 70% higher than the halogen lamp, so the xenon lamp has a higher energy density and light intensity. The improvement of the brightness of vehicle lights has also effectively expanded the visual range in front of the vehicle, thus creating safer driving conditions. Four, save electricity 1/2, halogen lamp consumes 60W above electricity, xenon lamp needs 35W power only. Five, because the xenon lamp has no filament, it will not produce the problem of scrap because of the broken filament. The service life of the xenon lamp is much longer than the halogen lamp, and the life span of the xenon lamp is equivalent to the whole operation time within the average use cycle of the car. Six, once a xenon lamp fails, it will not be extinguished in a moment, but it is extinguished (or quickly lit) by gradually darkening, so that the driver can win the time in the night drive and stop at the edge of the car. Seven, xenon headlights do not produce extra glare (lens installation), and will not cause interference to the driver of oncoming cars.