Street lights are an automatic control working system. As long as the working mode of the system is set, it will automatically control the work. Control mode is generally divided into three types: light control startup, light control shutdown; chronograph control startup and timing control shutdown; light control startup and time -time control shutdown, we generally select the mode of this mode, the lights are low to the set value when the sunlight is low to the set value. Sensor control starting lights work, while timing start. Stop work when time to set time. The solar battery of this system has two functions: first, charge the battery during the day; second, do the light control sensor, use the charging of RC components. We generally use 18 watts or 36 -watt low -pressure sodium lamp as the light source because its light effect is the highest in the light source. Street lights are the ideal road lighting. With the improvement of people's lives and the continuous development of society, it will be widely used, so that the light given to the earth to the earth will be lighting for humans at night.