Artificial airway refers to the airway established by medical personnel through tracheal intubation, tracheotomy and other methods called artificial airway when the patient has respiratory difficulties. Artificial airway can effectively ensure the patient’s ventilation function and save the patient’s life. Clinical artificial airway establishment methods include tracheal intubation or tracheotomy. The establishment of an artificial airway not only improves the patient’s respiration, but also connects with a ventilator, so that some patients with respiratory difficulties can maintain their respiratory function through mechanical ventilation.