To provide a table decorating lamp and a table decorating method, by which safety can be ensured in place of the flame of a candle, and free table coordination can be made easy without impairing the sense of beauty on a floor and table.

The table decorating lamp is a decorative luminaire that can make table coordination easy, and the method thereof comprises detachably placing a battery light source upward at a lower part of a transparent container, covering it with light diffusing means in the form of particles or a ribbon, which transmit and/or irregularly reflect light from the light source and providing a conical or sphecical reflecting mirror at an upper part of the container.