The utility model relates to a powder packaging device, which comprises a vacuumizing tube, wherein the upper end of the vacuumizing tube is connected with a vacuumizing system, and the lower end of the vacuumizing tube is provided with an internal thread interface. The powder packaging device is characterized by further comprising a vacuumizing suction tube with the surface bestrewed with holes and at least one vacuumizing connection tube with the surface bestrewed with holes, wherein an external thread interface is arranged at the upper end of the vacuumizing suction tube, the lower end of the vacuumizing suction tube is sealed, an external thread interface is arranged at the upper end of the vacuumizing connection tube, and an internal thread interface is arranged at the lower end of the vacuumizing connection tube. The lower end of the vacuumizing tube is in threaded connection with the upper end of the vacuumizing connection tube, and the lower end of the vacuumizing connection tube is in threaded connection with the upper end of the vacuumizing suction tube. The number of the vacuumizing connection tube is increased or decreased according to the size of a packaging bag, the upper end of the vacuumizing suction tube is connected with the lower end of the vacuumizing connection tube, and the upper end of the vacuumizing connection tube is connected with the lower end of the vacuumizing tube. Vacuumizing can be conducted as long as the vacuumizing suction tube and the vacuumizing connection tube are stretched into the packaging bag, air in the packaging bag can be extracted quickly, and the volume of the packaging bag is reduced.