The diet of Alzheimer’s disease is as follows: First, pay attention to the nature of food, try to make semi-solid food, such as semi-fluid or soft food. Because patients with Alzheimer’s disease are often accompanied by dysphagia, if it is liquid or liquid food is easy to cause choking, resulting in aspiration pneumonia and cause serious complications. Second, pay attention to strict control of fat intake, because many studies suggest that a high-fat diet can cause functional damage, including multiple brain cells, which will aggravate the symptoms of Alzheimer’s disease. Third, to increase the appropriate intake of B vitamins, because current research shows that appropriate increase in vegetables, fruits, animal offal and cereal bran, including rich in B vitamins, can be in the alleviation of Alzheimer’s disease symptoms have great help. In addition, sesame seeds, walnuts, mulberries, and lilies all exist to calm the mind, replenish vitamins and tryptophan, and improve both sleep and brain stability, thus improving dementia symptoms.