Abstract: A downlight, comprising: a back cover; light source components, provided on an aluminum substrate; a surface ring, which is a transparent supporting component and supports the aluminum substrate so that the aluminum substrate can be fixed to the back cover, and is fastened to the back cover; a light diffusing cover, mounted on a bottom of the surface ring for transmitting light emitted from the light source components. In the downlight of the present disclosure, light is transmitted to a ring-shaped panel of the surface ring through a truncated cone structure of the surface ring, and is then transmitted out of the ring-shaped panel, to achieve light emission with a new angle, solving the problem that in conventional downlights, light can only be emitted from a single angle. The present disclosure improves the angle of light emission from the light source while also improving its light emission effect.