Elderly people inserted gastric tube, eating out of the mouth may be improper feeding, slowing of gastrointestinal peristalsis, reflux esophagitis and other causes, you can change the feeding habits, the use of medication or the use of intravenous nutrition. 1. Improper feeding: cerebrovascular disease affects the swallowing function, intestinal obstruction requires gastrointestinal decompression and other conditions need to be through the gastric tube for the body to provide nutrients and reduce abdominal pressure. If the feeding speed is too fast or the amount of a single feeding is too large, it may lead to the phenomenon of the elderly inserting the gastric tube to eat out of their mouths. Nasal feeding can be slowed down and food can be given in small amounts. 2. Gastrointestinal peristalsis slows down: old age, reduced exercise and other reasons may lead to gastrointestinal peristalsis slows down, appeared in the elderly gastrostomy tube, eating out of the mouth symptoms. You can use drugs such as domperidone and mosapride to promote gastrointestinal motility. 3. reflux esophagitis: esophageal sphincter relaxation and other reasons may lead to reflux esophagitis appeared in the elderly gastric tube, eating out of the mouth out of the symptoms. You can use omeprazole, mosapride and other drugs to systematic gastric acid secretion and promote gastrointestinal peristalsis, and if necessary, you can also provide nutrition through the vein. Elderly people inserted gastric tube, eating out of the mouth may also be caused by other reasons, so you need to further examination of abdominal ultrasound, X-ray and other items to find the cause of the treatment under the guidance of the doctor is not recommended to use their own medication.