Inability to eat from the mouth after insertion of gastric tube. Clinical need to insert a gastric tube is usually postoperative coma, swallowing disorders, cerebral infarction and other patients who can not eat normally from the mouth, most of the patients’ esophagus and airway usually belong to the open state. After inserting a gastric tube and then eating from the mouth, the patient cannot swallow normally, which may easily cause choking, aspiration or airway blockage, leading to the risk of choking. Patients with gastric tube are usually fed directly by gastric tube, and food or nutrient solution is injected directly into the stomach through a syringe, usually with fluid food, so as to ensure adequate nutrition and promote the recovery of the disease. To summarize, after inserting the gastric tube is not allowed to eat from the mouth, the patient’s family should strictly abide by the hospital regulations, do not privately carry out improper operation, to avoid bringing unnecessary damage to the patient.