The present invention relates to a multifunctional power distribution network automation device, which comprises a door body, a cabinet body, a fire-extinguishing structure, an automated circuit board structure, a lock, a wrench, an alarm lamp, a power lamp, a hinge, a visual panel, a damping strip, a switch, a display screen, an operation keyboard, a housing, a sound control box, a lighting lamp, a first switchboard, a second switchboard, a fixed frame and a base. The door body is connected with the cabinet body through the hinge. The fire-extinguishing structure is arranged on the right side surface of the cabinet body through the fixed frame. The automated circuit board structure is arranged at the upper part of the second switchboard. Based on the fire-extinguishing structure, the automated circuit board structure, the visual panel and the alarm lamp, the fast fire-extinguishing effect is realized, and the fire-extinguishing effect of the device is improved. Furthermore, dry powders, remaining after the fire-extinguishing process, can be conveniently cleaned, so that the interior of the device is kept clean. As a result, the service life of the device is prolonged, and the device can be intelligently controlled. The automation level of the device is improved, so that the device is more convenient to use.