Drug delivery device

The utility model relates to a drug delivery device in the technical field of medical instruments, the drug delivery device is used for outputting drugs in a drug container, a drug output end is formed on the drug container, the drug delivery device comprises a spray pipe, a drug inlet and a drug outlet are formed in the two ends of the spray pipe respectively, and the drug inlet is used for being communicated with the drug output end; the spray pipe is sleeved with the sleeve, a connecting end and a closed end are formed at the two ends of the sleeve respectively, and the connecting end is used for being connected with the medicine output end; the handle is fixedly connected with the outer surface of the sleeve; and the medicine flow controller is arranged in the spray pipe. According to the application, the medicine in the medicine container can be more accurately and uniformly covered on the target tissue of the patient, the treatment efficiency is improved, and the possibility that the medicine is pollute