Light is the source of everything from life, energy, heat, and color. It is even the most important scientific “miracle”. Usually, people mainly use lighting for daily life. In residential and public places, adequate lighting can create different feelings. In the office, people use it to work, while in the entertainment field, people use it to add extra enjoyment. In addition, various decorative lights also bring us a colorful world, making our life full of light. Lighting is especially important at present with the progress of high technology and the development of urban lighting. It can be used as a medium of expression, not only showing the beauty of light but also expressing the artistic charm and civic function of urban lighting projects. However, improper lighting can also cause problems. Excessive lighting at night will cause environmental problems, such as light pollution and energy waste. The scientific lighting is going to raise our attention to the importance of environmental protection. In conclusion, lighting plays a very important role in our life today and will continue to do so in the future. As scientific technologies develop, lights will be even more important as they provide us with warmth, life and energy for a better life.