Lighting is a kind of physical phenomenon which can evoke human objective psychological phenomenon. Light is an inseparable part of life. It is widely used in all aspects of life, such as lighting in roads, hospitals, hotels, factories, workshops, stadiums, exhibitions, theaters, schools, etc. Lighting can help people to enhance their awareness of environmental safety and security. Good lighting can reduce accidents. Lighting can add color to people's life. In the night, the lights of buildings, parks, commercial buildings, etc., all show a variety of wonderful scenes. In addition, lighting can beautify the environment. Beautiful lights can make people feel comfortable. In addition, lighting can create an atmosphere. Different types of lighting can bring different atmospheres. Warm lighting can make people full of happiness, while cold lighting can make people feel calm. Lighting is a kind of mystic art. In the building, if the lighting is well done, it can reflect the building's extraordinary charm. However, inappropriate lighting can destroy the beauty of the building. Lighting plays a very important role in people's life. We should pay great attention to lighting.