Endotracheal intubation is a common clinical resuscitation technique in which a specially designed flexible tube is inserted into the trachea or bronchus through the nose or mouth. Tracheal intubation is a common rescue technique for patients with respiratory dysfunction, as it keeps the airway open, ensures ventilation and oxygenation, and prevents aspiration. Acute tracheal intubation should be performed when the patient has respiratory distress such as irritability, triple concave sign, progressive hypoxemia, etc., which cannot be improved by conventional oxygen therapy, and tracheal intubation should also be performed in case of airway obstruction. However, it should be noted that tracheal intubation should be strictly sterilized to avoid lung infection; the denture needs to be removed before intubation so as to avoid improper force to make the patient’s teeth fall out, resulting in asphyxiation. Tracheal intubation must be performed by professionals to avoid multiple complications and even death.