The invention discloses an internal routing inspection device for an enclosed switchgear cubicle. The internal routing inspection device comprises a switchgear cubicle body, a wireless camera, a micro motor and a remote control receiver; a sliding rail is arranged on the inner side face of a cubicle door of the switchgear cubicle body in the vertical direction, vertical dovetail grooves are formed in the two sides of the sliding rail respectively, the wireless camera is installed on a support, the bottom of the support is assembled in the sliding rail through a rolling wheel, the rolling wheel is fixedly installed on an output shaft of the micro motor through a central hole, and the micro motor is electrically connected with the remote control receiver; the support is provided with two support rods, the free end of each support rod is provided with a dovetail-shaped sliding block, and the sliding blocks are correspondingly assembled in the dovetail grooves at the two sides of the sliding rail.