Lighting plays an important role in our daily life, from in the morning to the night. In the morning, the sun, as the natural lighting, wakes us up and brings us energy. During the day, good lighting helps us to do our chores, such as work, house-keeping, etc. At night, lighting in ordinary houses usually comes from electricity. However, in some villages lacking electricity, kerosene lamps used to be the only source of lighting. Today, solar powered lamps become more and more popular in those areas. Form the aspect of ecology, good lighting respects the environment and saves energy. For example, LED lights can save up to 90% energy compared to traditional light sources. In terms of visibility, good lighting helps us feel comfortable and working efficiently. With the development of technology, more and more lighting is designed specifically for the requirements of people and light up the whole world. In summary, no matter it is natural lighting or artificial lighting, good lighting plays an essential part in our life. It not only gives us better vision but also save energy and protect environment.