Gastric intubation is an invasive operation, and because of the complex anatomy of the pharynx, local soft tissue injury and inadvertent tracheal entry can easily occur during the operation. The main hazards of repeated intubation are local irritation and the risk of asphyxiation and misaspiration during repeated intubation. Some patients have difficulty in inserting the gastric tube due to their disease or anatomical abnormalities. If the professional fails to insert the gastric tube after 2-3 times, it is usually recommended to go to the operating room for surgical intubation under general or local anesthesia to avoid the damage caused by repeated intubation.