Packing box

The utility model provides a packing box which comprises a large pressing cover, a stuffing box and an anti-theft stuffing box. The top end of the stuffing box is connected into the large pressing cover in a penetrated mode, the bottom end of the stuffing box is sleeved with the anti-theft stuffing box in an axially-moving mode, and the position between the bottom end of the stuffing box and the bottom wall of the anti-theft stuffing box is filled with oil leakage resisting stuffing. By means of the packing box, the oil leakage resisting stuffing is arranged in the anti-theft stuffing box, when the large pressing cover is damaged or disassembled, the stuffing box and the anti-theft stuffing box relatively move to press the oil leakage resisting stuffing located in the anti-theft stuffing box, the oil leakage resisting stuffing is tightly sealed on a polish rod of a pumping unit, and the aim of preventing oil leakage is effectively achieved.