This article briefly introduces the design of the first LED exterior lighting demonstration project in Chongqing,China. With the help of a unique locally developed LED control system based on RS-485 BUS, a free edition and accurate control of a very large scale illumination pictures changed at any time has been achieved. This control system also increases the stability of the whole lighting system and extends the life-span of LED lamps. In this project,a new LED luminary has been developed. An important result of this project is helping local manufacturers to develop better products for the market and promoting development of local LED industry.