Lighting plays an important role in humans daily life, especially for the modern people who live in cities. People tend to turn to electric light to illuminate their houses, workplaces and everywhere they need. But before the invention of electricity, lighting was based on fire and oil lamp, which not only produces minimal brightness but also creates lots of smoke. The invention of electricity made it possible for lighting to become part of everybodys life. It has become one of the basic needs of human living, like water and food. It is extremely important for industrial production and other activities. Nowadays, different types of lighting are widely used in different occasions, like LED lights, halogen lamps, incandescent light sources and so on. People are able to choose the different lights according to their needs. Different lights provide different brightness and colors, making the environment much brighter and colorful. Environmental protection has become a priority globally. To reduce energy, people usually turn to energy efficient lighting, like LED, where electricity is saved and heat is reduced. It is a great way to support green energy and make our earth a better place for living. To sum up, lighting is an essential part in peoples daily lives. It provides us the light we need for seeing, and making colorful environment. With the development of environment protection, electric energy efficient lighting will be more and more widely used in different occasions.