Many cities have emerged to electricity agonies, that the main reason is caused by tight supply of domestic conventional sources of energy, it is only temporary for use less energy, but for a city, the long-term development of a country is not a good solution. We need to do is to develop the use of renewable energy to replace conventional energy to save, solar garden light is the use of photoelectric conversion technology lighting equipment. The use of solar energy can be infinite, and will not result in a waste of a kind of renewable energy, to use on the street lamp nature also brought a lot of benefits. In the long run, the prospect of solar garden light is very good. People's consumption in the first place is more practical, low cost, and the adoption of solar garden light is based on research and development of China's national conditions and customs, high cost performance. According to the above said, solar garden light is necessarily will replace the use of conventional lamps city production, life, especially in energy, electricity and the electricity difficulties in remote areas, has a strong potential replication, use safety is also high, cities don't need electricity.