The invention discloses an improved mailbox device. The device comprises a mailbox body and a base fixedly mounted on the upper right portion of the mailbox body and an illumination lamp cooperativelyconnected with the base, wherein the mailbox body is equally divided into a plurality of storage spaces by a plurality of partition plates; the base comprises a jack opened downwards; a first slidinghole and a second sliding hole are respectively arranged opposite to each other in the bottom wall of the jack; an electrifying hole is formed in the base, above the jack; a driving groove is arranged in the base, above the second sliding hole. According to the invention, the overall structure is simple with safe and reliable operation, which greatly increases the installation and replacing efficiency of the illuminating lamp to effectively avoid electric shock accidents during the installation and replacing of the illuminating lamp, and the life safety of the installation personnel is guaranteed; it is simple and convenient to operate the entire device; the automatic installation and disassembly of the illuminating lamp can be achieved, and the service life is prolonged.