Long-term use of gastric tube may lead to nasal and esophageal mucosal damage, but also affect the function of the digestive tract, serious respiratory tract infection. 1. Nasal and esophageal mucosal damage: inserting a gastric tube is a kind of mechanical damage, long-term insertion of a gastric tube on the nasal mucosa esophagus and other parts of the stimulation is more serious, will lead to nasal mucosal erosion, esophageal erosion, causing nasal bleeding, esophagitis and so on. 2. Affect the function of the digestive tract: long-term use of gastric tube, can not normal secretion of saliva, can not normal chewing will produce low appetite, digestive fluid secretion will affect the gastrointestinal peristalsis, at the same time will affect the absorption of nutrients. 3. Respiratory tract infection: a common complication of long-term use of gastric tube is foreign body inhalation, which causes respiratory tract infection, and if it causes serious pneumonia, it will be life-threatening. When using a gastric tube for tube feeding, it is necessary to pump back each time food is injected to make sure there is no gastric retention and to avoid reflux into the respiratory tract. Long-term use of a gastric tube should be treated in accordance with the doctor’s instructions, and regular operation should be taken to prevent aspiration, and regular review should be carried out.