Since the development of the LED street lamp, its technology is also in progress gradually, in order to solve the heat dissipation, light failure problem, a series of key technologies such as mature technology makes the price of the LED lights are also greatly reduce, believe the LED road also has good development prospect in the field of road lighting. LED street light compared to traditional street lamps light source has many advantages, has been solved and some key technical problems, at the same time also in development, research and promote more new technology of LED lights, we hope that the LED street lamp progress, in the near future, with excellent performance is more widely used in the construction of urban lighting. Whether now or in the future, comprehensive consideration of energy and the energy will be more complicated, the indicators affecting the quality of lighting gradually increased, illuminance level of all countries are at their lowest in recent decades. This trend requires us in the design of LED street lamp can reasonably determine the intensity of illumination standard, rather than blindly pursue high index. The higher the intensity of illumination is not better, sometimes backfire, so should be a reasonable choice.