Lighting plays an important role in our life, which can not only illuminate our life, but also create a comfortable atmosphere for our life. Lighting has two different forms: functional lighting and decorative lighting. Functional lighting provides general lighting for people in the living room, kitchen, bedroom and other areas. It is designed to illuminate the entire room or an area for certain activities. It is important for reading, working and other activities. Usually, people install downlights, table and wall lamps which direct light down onto tasks or area where you want to focus. Besides, people often choose a fixture with a diffuser or frosted glass to reduce glare and provide a warm, even light. Decorative lighting can be used to highlight architectural elements, art, special features and create a more inviting atmosphere. Uplighting such as wall sconces, and dynamic light sources such as adjustable track lights and recessed lights tend to create interest and drama. Also, the aesthetic and practical value of lighting can be further enhanced by the right color or texture of light making a difference in a room. In conclusion, good lighting is essential for our life and makes an important contribution to our health and emotional well- being. We should choose the functional and decorative lighting according to our preferences and needs.