The present invention provides a luminous assembly, more particularly, a decorative luminous assembly having a fiber-formed shaped part. The luminous assembly includes a light source and a shaped part of fiber with a predetermined shape. The light source is installed on the shaped part of fiber. The luminous assembly may further comprise a light reflecting element arranged in the back thereof. Light from the light source to the light reflecting element is reflected back substantially towards the shaped part. The luminous assembly has advantages of simple manufacturing process, lower cost, and convenience for mass production etc.