Elderly people may eat tasteless food due to dietary factors, degradation of taste bud function, decline in digestive function and other disease factors. 1. Dietary factors: due to the digestive function of the elderly is relatively poor, if you often eat some of the more greasy, high-calorie, difficult to digest food, will increase the burden on the stomach and intestines, resulting in a loss of appetite, the appearance of eating tasteless. 2. Degradation of taste bud function: the elderly eating tasteless, may be related to taste bud degradation, due to age, the function of the body’s organs will be degraded to a certain extent, the taste buds on the tongue will also be degraded phenomenon, affecting the tongue’s perceptual function, the phenomenon of eating tasteless. 3. Decrease in digestive function: with the growth of age, the gastrointestinal function of the elderly will gradually become weaker, intestinal peristalsis slows down, affecting the digestion and absorption of food, and the secretion of digestive glands will be reduced, which will lead to the situation that the elderly will have no taste of food. 4. Tumor of digestive tract: Tumor of digestive tract, such as stomach cancer, intestinal cancer, etc., will affect the appetite of the elderly, and some patients will have symptoms such as general weakness, nausea and vomiting. If the symptoms last for a long time, it is recommended that the patients go to regular hospitals in time, and under the diagnosis of doctors, take targeted treatment according to the specific condition of the patients.