The utility model discloses an illuminating device. Illuminating device includes support, lamp shade, reflector plate and light guide plate, supporting seat and mobile terminal, wherein: the lamp shade is fixed in on the support, in reflector plate and light guide plate were fixed in the lamp shade, the reflector plate was close to the lamp shade setting, the supporting seat is fixed in on the support, on mobile terminal arranges the supporting seat in, smooth directive light guide plate that mobile terminal sent. Compare prior art, this scheme can realize safe energy -conserving effect, solves electronic waste's such as old and useless cell -phone reutilization problem simultaneously effectively.