To provide a cup holder with illumination capable of illuminating along a shape regardless of the shape of an opening into which a beverage container is inserted or the shape of a container holding part.

Light emitted from an emission surface 8a of an EL film 8 enters the interior portion of a light guide plate 9 from the incident surface 9a of the light guide plate 9, reflects on the reflection surface 9c, and reaches the emission surface 9b to emit illumination light from the emission surface 9b. Thus, a position of the opening 3 of the cup holder 1 can be easily visually confirmed even under low illumination such as during nighttime hours. Further, the shape of the opening 3 of the cup holder 1 can be easily visually confirmed even under low illumination such as during nighttime hours. Therefore, the tubular beverage container A and the square column beverage container B can be certainly inserted in the opening 3 of the cup holder 1.