A light and shadow lamp is a lighting device that creates a special atmosphere by selecting and reconstructing ambient light design elements. It can create a variety of lighting shapes to create different atmospheres. Light and shadow atmosphere lamps mainly use different types of light sources, such as incandescent lamps, fluorescent lamps, LED lamps, neon lamps, lasers and holographic projections, etc. These light sources have different lighting effects. For example, the light colors of incandescent lamps and fluorescent lamps are relatively single, mainly white light and yellow light; while LED lamps are small in size, generate less heat, and have rich colors, and can be combined into light effects of different brightness and purity. Laser lights have strong directionality and high brightness, and can present rich colors; holographic projections can produce light that echoes each other. In addition, the light and shadow effects will also produce different effects due to the different focusing methods of the light source. These factors will affect the final lighting shape and atmosphere effect.