Lighting plays an important role in our daily life. Not only can it provide us with the needed illumination, but also it can create different atmosphere and brighten up our mood. Lighting fixtures come in a wide variety. They are available in different shapes, sizes and materials. One can choose from hanging lamps, standing lamps, ceiling lamps, for different purposes and different places. Hanging lamps, for example, usually provide light to larger areas, because of its higher installation height, while standing lamps usually provide more focused light to certain part of the room. Ceiling lamps usually are widely used in residential and office buildings for its soft illumination. Even though all kinds of Lighting fixtures have different functions, they play an important role both indoors and outdoors. Indoors, proper lighting can bring us both convenience and comfort. The brightness of the lighting fixtures can help us to clearly identify objects and achieve different emotional visual effects. For example, bright illumination can make a room appear larger and more elegant, while subdued lighting can give the room a warm cozy feeling. Outdoors, lighting can be used for both decorative and safety purposes. For example, illuminating a park path can help viewers identify the path clearly, and outdoor wall screens can help attract people's attention and promote their business. Moreover, the right outdoor lighting can even reduce the possibility of crimes such as theft and robbery. In conclusion, lighting is an essential part of our life, and properly chosen light fixtures can provide us with both convenience and safety, and even sometimes with aesthetics.