Solar lamps are a type of lighting device that uses solar energy instead of traditional electricity. The working principle is that the embedded solar panel absorbs sunlight to generate electricity during the day, and the stored electricity is used to supply electrical energy for the lamps and lanterns at night. Solar lamps are widely used in gardens, streets, courtyards and other places, which have high energy saving and environmental protection effects. Solar lamps are mainly composed of solar panels, storage batteries, controllers and light sources. The built-in solar cell converts the light energy absorbed by the panel into electrical energy. During the day, the photovoltaic effect of the cell directly charges the storage battery. At night, the storage battery supplies electricity to the light source. It can provide continuous illumination for two to three rainy days. Solar lamps are a type of green energy lighting. Its energy comes from natural sunlight and does not require electricity. It is pollution-free and can be reused. Solar lamps do not require complicated wiring and can save users' installation and maintenance costs. Moreover, due to the high level of functional integration, the structure and appearance of solar lamps are more delicate and beautiful. In short, solar lamps use solar energy to convert, store and use, which effectively reduces energy consumption and environmental pollution. It has become one of the ideal lighting products for modern urban lighting.