LED downlight is a product developed by applying new LED lighting sources on the basis of traditional downlights. Compared with traditional downlights, it has the following advantages: energy saving, low carbon, long life, good color rendering, and fast response speed. The design of LED downlight is more beautiful and lightweight. When installed, it can maintain the overall unity and perfection of architectural decoration without destroying the setting of lamps. The light source is hidden inside the architectural decoration, the light source is not exposed, there is no glare, and the visual effect is soft and uniform.