Luminous cup

The utility model discloses a luminous cup which comprises a water cup and a cover arranged on the top of the water cup. A switch is arranged on the upper surface of the cover, a storage battery is mounted in the cover, and a lamp is arranged on the lower surface of the cover. Water is filled in the water cup, when a lamp is turned on at night, lamplight is refracted through the water, lighting area is increased, and the lamplight is attractive; when a user walks out at night, the luminous cup can be used for illumination; and when placed in an indoor environment, the luminous cup has a decorating effect. The luminous cup is simple and attractive in overall appearance, and has a quite high decoration effect. If a plurality of luminous cups are hung in a house, the luminous cups seem like ancient lanterns and have a distinctive flavor.