The invention discloses an auxiliary 
breathing device for a pulmonary patient. The auxiliary 
breathing device comprises a fixing box, wherein side plates are symmetrically fixed to side edges of the fixing box, the side plates are connected with adjusting screw rods through threads, and the adjusting screw rods are connected to clamping plates through bearings. The auxiliary 
breathing device further comprises a partition plate, wherein the partition plate is fixed in the fixing box, a 
compressed air bag is arranged on the partition plate, the side edge of the 
compressed air bag is connected with a connecting 
pipe, the connecting 
pipe penetrates through the fixing box, the 
tail end of the connecting 
pipe is connected with a 
mask, an elastic 
rope is fixed to the 
mask for wearing, and a soft rubber pad is fixed to the lower end face of the 
mask for protection; and a motor, wherein the motor is fixed to the fixing box, and a disc is fixed to the 
tail end of an output shaft of the motor. According to the auxiliary breathing device for the pulmonary patient, an adjustable automatic 
extrusion mechanism is adopted for replacing manual 
extrusion to achieve the pressing effect on the 
compressed air bag, a uniform pressing effect can be guaranteed, gas flow can be adjusted according to actual requirements, and therefore, use requirements of different patients are met.