Trachea cannula port plugging device

The utility model belongs to medical instruments, and discloses a trachea cannula port plugging device. The outer side of the lower end of a connecting pipe is provided with a conical jacket, the upper end of the connecting pipe is provided with an emergency plug, and the side wall of the middle upper portion is provided with a vent hole. The conical jacket is externally provided with a pressing nut matched with a thread. The connecting pipe is provided with an adjusting thread bushing which is matched with the thread and used for adjusting the aperture of the vent hole. According to the trachea cannula port plugging device, the connection firmness is improved, the phenomenon that a patient feels uncomfortable when the air pressure in the cannula is sharply changed and breathes difficultly can be avoided, the emergency plug can be fast unplugged, the plugging device does not need to be dismounted, and therefore the operation complexity is reduced.