Drug delivery device for treating hpv virus infection

The utility model discloses a drug delivery device for treating hpv virus infection, a drug delivery structure is arranged in a long protective cylinder in a penetrating manner, and a sealing table is fixedly mounted on the end face of the long protective cylinder; a pushing rod is connected to the interiors of the long protection cylinder and the sealing table in a penetrating mode, an administration device is fixedly installed on the side of the round rod, and the administration device makes contact with the cervical lesion position of the patient to smear medicine. Dosing limiting mechanisms are mounted on the inner side and the outer side of the long protective barrel, and the position, corresponding to the side of the long protective barrel, of the dosing device can be limited through the dosing limiting mechanisms, so that medical staff can be assisted in completing dosing operation; a drug delivery protection mechanism is arranged on the side of the long protection cylinder, so that drug loss caused by