Lighting is essential for human environment. Lighting can bring a comfortable visual environment, create a good atmosphere, and bring a pleasant atmosphere. Lighting can not only illuminate the environment, but also set off the environment. Different kinds of lights can create different moods and different atmospheres, making people feel differently. Cool white and warm white lighting can create a cozy and comfortable atmosphere. Colorful lighting can make people feel warm, romantic and happy. Creative lighting can also make people feel festive or quiet. Good lighting can not only improve the environment, but also improve people's physical and mental health. People need adequate brightness to perceive the surroundings clearly and accurately. Otherwise vision will get tired and not be able to work efficiently. The appropriate brightness levels can also make people feel relaxed and comfortable, so as to improve the quality of life. In conclusion, lighting is indispensable in the human environment, and it is also the key factor to create a better living atmosphere.