Along with the development of the city is more and more quick, the urban scale expands unceasingly, improve the image of the city, more and more is also high to the requirement of urban nightscape lighting, night view lighting actual accounts for 5/8 of the whole city lighting engineering; Functional lighting instance, such as roads, Bridges, tunnels and other lighting only accounts for about 3/8 of the whole city lighting engineering, thus it can be seen at night lighting is very important task, the current used more widely is the LED street lamp. Is the use of our traditional street lamp is on the road can't bright at the appropriate time, city night scene is beautiful, is not the primary and secondary points, so the use of street lamp is wasted energy, and affected the whole lighting effect. So now the use of the one-armed LED street lamp is to solve the main problems of the urban lighting project planning, LED energy-saving lamps kill two birds with one stone, is more obvious advantage. LED street lamp is very pay attention to the landscape lighting, and won't weaken its function of lighting, using more energy-efficient LED lighting, coupled with reasonable intelligent control, automatic turn off some street lamp lighting in some time, or reduce the lighting intensity of light source, can get better energy saving effect and the actual use requirements of reasonable balance.