Solar street lamp system is an independent distributed power supply system, which is not subject to regional restrictions, is not affected by power installation position, and does not need to excavate the road surface for wiring and buried pipe construction. Site construction and installation are very convenient, do not need power transmission and transformation system, do not consume mains electricity, both environmental protection and energy saving, comprehensive economic benefits are good, especially for the built road street lamp is very convenient. Especially in the far away from the power grid street lights, outdoor billboards, bus station application, its economic benefits are more obvious