LED is a green light source. LED lamps are driven by DC without stroboscopic; No infrared and ultraviolet components, no radiation pollution, high color rendering and strong luminous directivity; Good dimming performance, no visual error when color temperature changes; The Cold Light source has low calorific value and can be safely touched; These are not available for incandescent and fluorescent lamps. It can not only provide comfortable lighting space, but also well meet people's physiological health needs. It is a healthy light source that protects eyesight and is environmentally friendly. At present, a single LED has small power and low brightness, so it is not suitable to be used alone. However, it has broad application prospects to assemble multiple LEDs together to design practical LED lighting lamps. The lamp designer can decide the shape of the lamp optical system, the number of LEDs and the size of power according to the requirements of lighting objects and luminous flux; Several LED light-emitting tubes can also be combined and designed as secondary light sources of point light sources, ring light sources or surface light sources, and lamps and lanterns can be designed according to the combined secondary light sources. The word LED lamp supplier has only become popular in China in recent years, and people familiar with the lighting industry are no strangers. Semiconductor light emitting diodes, referred to as LED, were developed from the 1960s s and gradually moved towards marketization. For those who are not familiar with the lighting industry, the following is an introduction to semiconductor light emitting diodes: low energy consumption and low light attenuation. The brightness of a 1 w led is equivalent to that of a 35W halogen spotlight. In the long history of lamp development, local lighting has always been the position occupied by halogen lamps and metal halide lamps. The birth of LED will be replaced by local lighting in the future. Second, the long service life, no need to replace the light source, no need to maintain, this is actually a problem that consumers have been worried about. Consumers are not professionals. They have no professional inspection equipment and no professional maintenance knowledge when choosing products, and LED solves their worries. At present, the sales volume of LED automobile lamps and lanterns market keeps a growth rate of about every year, but the proportion of domestic LED automobile lamps and lanterns is not high. Car companies with large LED usage are concentrated in China, and these car companies generally limit the brand of LED, and it is difficult for domestic LED companies to enter their supply chain. In addition, compared with international famous big brands, domestic LED may have more problems in terms of life span and uniformity of sorting. At the same time, the market supervision of automobile lamps itself is strict and the threshold is relatively high, as luxury consumer goods, automobiles are faced with one-to-one customers after sales. Any quality problem will cause complaints. Domestic LED has no chance to experience this kind of market for a long time and on a large scale, it is difficult to meet the car LED standard. Automotive lamps and lanterns are a very professional field. To do a good job in LED automotive lamps and lanterns, it will be difficult for both automotive lamps and lanterns enterprises and LED enterprises to fight alone, it is necessary for automobile lamp enterprises to have sufficient communication with LED enterprises, especially in the development of LED headlamps.