The invention discloses a
drug delivery device for fumigating a granary. The
drug delivery device comprises a control bin, a medicament bin and a
drug delivery bin below the medicament bin, wherein aresidue receiving bin is arranged below the
drug delivery bin, a control module, a power supply module, a
wireless communication module and a
wireless communication antenna are arranged in the controlbin. The
drug delivery device is in communication
interconnection with a remote monitoring terminal in a
wireless communication manner and can be remotely monitored. The invention further discloses adrug delivery method based on the
drug delivery device. According to the drug delivery device, the automatic
hydrogen phosphide fumigation can be realized without unattended operation, the concentration of
hydrogen phosphide gas in the granary can be monitored in real time, the automatic supplemental drug delivery can be carried out, the drug delivery concentration of the whole
fumigation cycle can be guaranteed, the
fumigation precision is increased, the personnel security is guaranteed, the manpower and
material resources are saved, and the device has good economic and
social benefits.