The elderly do not eat is generally divided into two cases: 1, the elderly’s level of consciousness decreases, the elderly do not want to eat or can not eat, this is common in the central nervous system diseases, such as cerebral infarction, cerebral hemorrhage, brain tumors or malignant tumors of various systems throughout the body in advanced stages, some metabolic diseases, such as hepatic encephalopathy, diabetic ketoacidosis, etc.. These diseases cause a decrease in the level of consciousness of the elderly, and the elderly cannot eat; 2. The elderly want to eat, but cannot eat, commonly due to muscular diseases of the vocal cords or pharynx, such as incomplete closure of the vocal cords, also known as true bulbar palsy or tumors of the stomach and esophagus, choking sensation after eating and repeated long-term misaspiration, causing the elderly to fear eating, etc. These conditions.