Sputum excretion device

The invention relates to the technical field of medical apparatus and instruments, in particular to a sputum excretion device which comprises an air blowing structure and a wearable structure. The air blowing structure comprises a first gas output pipeline, a second gas output pipeline and a first gas input pipeline which are connected with a body, and masks are arranged at the other ends of the first gas output pipeline and the first gas input pipeline; the wearable structure is suitable for being worn on the upper body of a user and comprises a plurality of vibration mechanisms arranged on a first face and a mounting mechanism arranged on a second face opposite to the first face, each vibration mechanism comprises a vibration body and a flexible connecting pipe used for connecting the vibration body with the first face, the multiple flexible connecting pipes communicate with one another, when the air blowing structure conveys or sucks air into the flexible connecting pipes through the second air output pipe