Expiration training device for training patient with chronic obstructive pulmonary disease

The utility model relates to an expiration training device, in particular to an expiration training device for training chronic obstructive pulmonary disease patients, which comprises a base, a lifting baffle plate, a tank body, a screw rod, a movable plate, an internal conduit and an external hose, the internal conduit is arranged in the base, an air inlet of the internal conduit penetrates out of the right side of the base, and an air outlet of the internal conduit is divided into two parts; an air inlet of the internal guide pipe is connected with an external hose, two air outlets of the internal guide pipe are respectively sleeved with a tank body, the tank bodies are mounted at the top of the base, a plurality of small holes are formed in the tank bodies from top to bottom, movable plates are slidably connected in the tank bodies, and a connecting plate is arranged between the tops of the two tank bodies; the connecting plate is rotationally connected with a screw, and the bottom of the screw is in threa