Older people with loss of appetite can eat more appetizing food, such as eating hawthorn cake before meals, drinking lemon water, appetizing fruit juice, oral appetizing tablets, etc. Further examination is needed to understand the causes, specific causes are as follows: First, abnormal liver function: there will be loss of appetite, indigestion, you can give glycyrrhiza sweeteners to strengthen liver protection treatment, promote liver function recovery, appetite will also slowly improve. Second, digestive system diseases: such as acute and chronic gastritis, gastric ulcer, duodenal ulcer, gastroesophageal reflux disease, gastroparesis and tumors of the stomach and many other diseases, there will be loss of appetite, abdominal distension and other uncomfortable symptoms, give gastroscopy to clarify whether there are organic lesions. Third, abdominal distension and constipation: decreased appetite due to abdominal distension and constipation can be given Si Mu Tang Oral Solution, Lactulose Oral Solution, Domperidone Tablets, and Gastric Dissipative Tablets to promote defecation and enhance diet. Fourth, electrolyte disorders: such as low sodium, low potassium, low phosphorus, etc., can also lead to loss of appetite. Fifth, psychological problems: we should pay attention to whether the elderly have psychological problems and other causes of mental depression and poor appetite, and give comprehensive treatment according to the cause.