Light is the source of visual perception, and all living beings can sense light and react to it. Lighting is the use of light technology to provide and manage light in spaces, which can include street lights, floodlights, spotlights, emergency lights, show lights and stage lights. Lighting plays a very important role in our daily life, and it is not only a key factor in the design of various environments, but also a way of creating a comfortable atmosphere and improving safety. In the modern home, lighting can be used to create a warm and cozy atmosphere, giving people a sense of comfort. In shops or hotels, lights can be used to create visual displays that attract customers. In industrial areas, integrated lights can help reduce potential accidents. The development of lighting has been rapid in recent years, with the emergence of new technologies such as LED lights, solar lights and smart lights. LED and solar lights are more energy-efficient than traditional incandescent lights, and smart lights can provide automatic control, giving people a sense of safety and convenience. Lighting is a key aspect of modern buildings and urban spaces. Although there is still room for improvement in lighting design, it has definitely come a long way, bringing both beauty and practicality to our society.