Lighting is an essential part in people's daily life. We cannot imagine how dull and lifeless the world would be without lights. Lighting plays many roles in our lives. On one hand, it brings us brightness and convenience. It allows us to see clearly so that we can go to work, study, communicate and do whatever it akes to make a living. On the other hand, it also gives us a sense of security. By having a bright atmosphere, it puts a stop to potential burglaries and assaults in a special way. Lighting technology has been developing rapidly in recent years. What used to be just an illumination tool is now becoming an iconic part in the city skyline. LED lights have been widely used in many iconic places all around the world for their energy efficiency and long service life. Advanced lighting controls are becoming popular as well. Smart lighting systems allow users to dim or brighten the lights in different areas in the building for different tasks and times. Lighting is an integral part of our lives. It makes our lives safer and easier. Advanced technology will make future lighting smarter and efficient.