Lighting, referring to the illumination of our living environment, has a big impact on our life. First of all, an appropriate lighting can improve our vision and reduce the workload of our eyes, which can help us keep an optimal level of concentration. On the other hand, different kind of lighting can bring different kind of atmosphere. For example, a warm lighting source can make us feel relaxed and comfortable, while a bright lighting may give us a vibrant or cheerful feeling. Moreover, people can use artificial lighting to create an atmosphere suitable for their special occasions. For instance, Christmas lighting can make us feel the joy and happiness; meanwhile, candlelight dinner can bring romantics to your dinner. In addition, lighting can also used as decoration, making the environment look more beautiful. Besides, lighting with certain special technique can also help us made a space look bigger or smaller, or even change its shape. Moreover, lighting nowadays become more and more green and energy-saving. People can light their space with LED bulbs which is more energy-saving and eco-friendly than the traditional light bulbs. To sum up, as an important part of our environment, lighting play some role in our life. It has great potential in creating a better atmosphere and saving energy.