Elderly people spit up when they eat because of trachea problems, but also because of digestive diseases. Elderly people spit when they eat, this situation may be chronic bronchitis, pneumonia and other respiratory tract infectious diseases, this type of disease is usually prone to coughing and coughing and other symptoms, severe coughing may lead to vomiting when you eat. Elderly sputum a meal on the vomit may also be due to gastritis, reflux esophagitis and other digestive diseases, can also be manifested as coughing phlegm, nausea or vomiting. Elderly people may also have other causes of sputum, such as pulmonary heart disease, cerebrovascular disease, etc. It is recommended to consult a doctor in time to find out the cause of the problem and then actively treat it.