Abstract: A multifunctional ink powder filling device for a regenerated powder cartridge box, which includes a bottle body, a powder-leakage prevention bottle plug, a powder filling nozzle and a bottle cover serving as a measuring cup at the same time, wherein the bottle plug is tightly matched and arranged on a bottle mouth of the bottle body and is externally provided with the powder filling nozzle, the inner and the outer peripheries of the pedestal of the powder filling nozzle are respectively provided with inner threads matched with the outer threads of the bottle mouth and outer threads matched with the inner threads on the mouth part of the bottle cover, and the upper end of the powder filling nozzle is provided with a diminishing heavy-caliber powder filling hopper.