Where there is light, there is shadow, and where there is shadow, it is tangible. The light shines through the tube of LED track lamp, and the corresponding tools such as shadow, reflector and silhouette plate, as well as different light sources and different irradiation positions of the lamp are displayed in the window. The design of window should make full use of this skill to create the form of light and shadow, fully contrast the main body of exhibits in different spatial levels, realities and backgrounds, and make the products more beautiful visually. Create value with lighting, and make shop lights.