Light is also important in an interior space.Indoor space is represented through light, and light can change the personality of the space.The light source of indoor space has two categories of natural light and artificial light. Indoor natural light or lighting design, which meets the function of lighting, light quality, vision and efficiency, moderate light and shadow, convenient layout, but also pay attention to the artistic effect.The performance of indoor lighting must be according to the requirements of indoor design, to determine the layout form, light source type, lighting type, lighting distribution mode and indoor decoration, color, furniture, furnishings and other styles of coordination and unity.Reflect practical and decoration combination, to enhance the artistic atmosphere of the interior space.