The invention provides a
lung function exercise device, and relates to the technical field of
lung exercise, the
lung function exercise device comprises a
treadmill device, the rear side of the top of the
treadmill device is fixedly provided with a stand column; the rear end of the
airflow control valve is fixedly connected with a fixed connecting
pipe, and the fixed connecting
pipe is fixedly connected to the upper portion of the front side of the stand column. The front end of the
airflow control valve is fixedly connected with a fixed
breathing channel; the two sides and the bottom of the
airflow control valve are connected with
assembly pipes. A pressure training device is connected outside the right side
assembly pipe; the gas flow control valve is arranged, a gas control structure capable of stably controlling switching is provided, when a use mode needs to be switched, a control knob is rotated to drive a
bevel gear face in a fluted disc groove to rotate through a
bevel gear so as to integrally rotate a
rotary valve element, the position of a V-shaped channel is adjusted, an
assembly pipe communicated with the V-shaped channel is changed, and the use mode of the valve is changed. Switching among different functions can be achieved, and the problem that an existing device is inconvenient to stably switch different functions is solved.