Lighting, an indispensable art of people's life, plays an important role in our life. People now use lighting for decorating their houses, offices, stores and even parks. Lighting can improve the environment of our living space. It not only can create a comfortable and cozy feeling, improve our mood, but also show more features of the interior. A well designed lighting can create the desired atmosphere for our space. Lighting can also be used for energy saving. We may choose advanced LED lamps with high energy conversion efficiency and longer service life for many large public buildings. In this way, it can reduce the cost on energy consumption and maintain a better illuminated condition. Lighting can also be used for security purposes. By adding external lighting, motion sensor ligths or security lighting, it can improve the security condition of our dwelling environment. In conclusion, lighting is an indispensable art in our life. It can improve the environment of our living space, reduce the cost on energy consumption and maintain a better security condition of our dwelling environment. It is very beneficial for our daily life.