Abstract: A portable silica gel noctilucent cup, which can be used as lighting equipment, is energy-saving and environment-friendly, and convenient to carry, overcoming defects in the prior art. The cup comprises: a cup body made of transparent or semitransparent silica gel, an opening portion of which is fixedly provided with a first fixed ring for supporting itself; a cup cover covered on the cup body, at least one face of the cup body towards the opening portion being transparent; and a light-emitting assembly comprising a light source, a solar battery panel mounted to a top portion of the cup cover, and a storage battery, which are electrically connected to the light source; wherein, a holding cavity for holding the battery and the light source is arranged on the cup cover, and at least a wall face of the holding cavity towards the opening portion transmits light.