Sputum suction teaching aid for artificial airway tracheostomy tube and using method of sputum suction teaching aid

The invention provides a sputum suction teaching aid for an artificial airway tracheostomy tube. The sputum suction teaching aid comprises a human body model, wherein a simulated airway is arranged in the human body model; one end of the simulated airway penetrates through the human body model and is located at the mouth of the human body model, and the other end of the simulated airway penetrates through the human body model and is vertically arranged downwards; an artificial airway opening is formed in the throat of the human body model; an artificial airway connected with the simulated airway is arranged on the inner side of the artificial airway opening; four liquid outlet devices evenly arranged on the outer side of the simulated airway are arranged at the lower end of the artificial airway; the liquid outlet device at the front end is connected with one end of a liquid outlet pipe, and the other end of the liquid outlet pipe is connected with a liquid outlet box fixedly connected to the inner side of th