The lighting of the sales place can guide customers into the shopping mall, make the shopping place form a bright and pleasant atmosphere, make the goods present bright and colorful colors, and stimulate customers' desire to buy. When the light is dim, the shopping mall will look dull and depressed, while when the light is too strong, customers will feel dizzy, and the sales staff will be nervous and prone to mistakes. Because the intensity of light has a great influence on the shopping environment, modern shopping malls attach great importance to the rational use of lighting equipment to create a bright and relaxed shopping environment. Using natural light can not only show the true colors of goods, but also save energy. However, the natural light source is affected by the lighting of buildings and the weather changes, which is far from meeting the needs of commercial places, especially large shopping malls, mainly artificial lighting. Artificial lighting in shopping malls is divided into basic lighting, special lighting and decorative lighting.

Color affects consumers' psychology. Different colors and their tone combinations will make people feel different. The color design of shopping malls can also stimulate consumers' desire to buy. Color has a great influence on the environmental layout and image building of shopping malls, so as to achieve beautiful and harmonious visual effects in the hue of business premises. It is necessary to design corresponding colors for all parts of the mall, such as floors, ceilings, walls, cylinders, shelves, stairs, windows, doors and so on. And the clothes of the shopping guide. The overall color system is mainly light, with bright colors dotted locally, rendering the business atmosphere and leisure atmosphere. Incorporate the theme color and enterprise identification system of thousands of department stores to set off the culture and characteristics of chain department stores. Color application should seek change in unity and unity in change. The lighting of shopping places can guide consumers into shopping malls, make the shopping environment form a bright and pleasant atmosphere, set off a dazzling array of colorful goods and arouse consumers' desire to buy. It should be divided into basic lighting, special lighting and decorative lighting. Basic lighting on the first floor 1000- 1200lux, and basic lighting on other floors is 700-800lux. In the case of ensuring the overall illumination, accent lighting and secondary lighting should be considered as much as possible. In terms of color temperature, gold jewelry and food consider warm light, electrical appliances consider cold light, and the rest basically consider neutral color temperature.