Lighting has played an important role in modern life, extending and enriching our lives far beyond what nature provides. It not only provides brightness, warmth and coziness, but can also directly and indirectly influence peoples body and emotions. In the practical applications of lighting, fluorescent lamps, incandescent lamps and led lamps are the most commonly used ones. Fluorescent lamps are generally used in schools, factories and public places, which is stable and energy-saving. Incandescent lamps typically used in homes that have a warm, soft tone and are used to create a homely, cozy atmosphere. LED lamps are becoming more and more popular due to its high efficiency, low power consumption, flexibility in design and long life. In addition to practical application, lighting can also be used for decoration. Different colors of lights, such as red, green, yellow, can create different atmospheres in the space. Lighting also can evoke peoples emotions, some lighting effect makes people relaxed and happy, while some others can make people feel horror and insecure. In conclusion, lighting has been an important part of modern life, it not only provides brightness, but also affect peoples emotions and atmosphere.