Lighting plays a very important role in life. In ordinary life, lighting not only guides us to the right direction but also provides us with a safe environment. In addition, lighting also has an important influence on human physiological and psychological health. In winter, people need more lighting in order to relieve their depression. Lighting helps people psychologically by improving the atmosphere in the room. People need bright and comfortable lighting to get more energy. Lighting also helps to reduce fatigue and improve sleep quality. In the home, lighting can be divided into daily lighting and decorative lighting. Daily lighting affects peoples daily activities such as reading, writing, and working. Decorative lighting can be used to create a warm and comfortable atmosphere in the home. In order to get the most out of lighting, people should choose the right kind of lighting. If the lighting is too bright, it will cause fatigue and headaches. Too little lighting would be a safety risk. So its important to choose an appropriate lighting intensity and color temperature according to the activity placed. In conclusion, lighting has great significance in peoples life. People should choose the right amount of lighting to ensure both psychologically and physically comfortable environment, in order for them to live in, work in and enjoy life.