Tracheal intubation is the most commonly used technique for artificial airway management and is an effective means of establishing an artificial airway. Tracheal intubation is the insertion of a specially designed tracheal tube into the patient’s trachea through the oral or nasal cavity to provide optimal conditions for airway patency, ventilation and oxygenation, and respiratory suction, and is an important measure for rescuing patients with respiratory dysfunction. The purpose of tracheal intubation is: (1) to keep the patient’s airway open during anesthesia, to prevent foreign bodies from entering the airway, and to facilitate timely suctioning of secretions or blood from the trachea; (2) to carry out effective artificial or mechanical ventilation, to prevent the patient from hypoxia and carbon dioxide accumulation; (3) to improve the ventilation of the patients who have the conditions of upper respiratory tract injury, stenosis, and obstruction, etc.; and (4) to improve central or peripheral respiratory failure Ventilation. Tracheal intubation should be performed in all cases where it is difficult to ensure the patient’s airway patency during general anesthesia (e.g., intracranial surgery, open thoracic surgery, and surgery in prone position, etc.), where it is difficult to keep the airway patency due to disease (e.g., tumor compression of the trachea), and in cases where there is a significant inhibition of respiration by general anesthesia or application of inotropic drugs. If there is any abnormality in respiration, one should go to the hospital in time for consultation, and standardized diagnosis and treatment should be carried out under the guidance of the doctor according to the comprehensive situation of the patient.