The invention discloses a multifunctional electricity meter box. The box comprises an electricity meter box body, wherein an air outlet net is arranged on the surface of the top portion of the electricity meter box body, an ash covering plate is arranged at the top end of the electricity meter box body, and the ash covering plate covers the air outlet net completely; a plurality of air outlets are formed in the side end of the ash covering plate, a dryer is arranged on the bottom face of the inner portion of the electricity meter box body, an air pump is connected to an air inlet of the dryer through a pipeline, and air inlets are formed in the inner wall of one side of the electricity meter box body. According to the multifunctional electricity meter box, through the arrangement of a ventilation blower, the air outlet net, the air inlets, the dryer and the air pump, damp air in the electricity meter box can be continuously discharged through the ventilation blower, and outside air is inhaled into the dryer through the air pump; after being dried by the dryer, the air is discharged into the electricity meter box, so that the air in the electricity meter box keeps dry all the time, and the use safety of the electricity meter box is improved; the ash covering plate is arranged on the top portion of the electricity meter box, and rainwater and dust can be effectively prevented from falling into the electricity meter box.