Patients with Alzheimer’s disease may become thinner and thinner because patients with Alzheimer’s disease have certain emotional and cognitive problems. As the disease progresses, patients may have nutritional disorders, poor appetite or problems with swallowing difficulties and choking on water, all of which can lead to a poorer and thinner nutritional status in the elderly. Therefore, family members of patients with Alzheimer’s disease must take good care of them and give them food through a gastric tube if necessary to improve the problem of nutritional disorders and increase the nutrition of the patients. Some patients with Alzheimer’s disease do not have the problem of active feeding because of depressed mood or cognitive changes, the patient must be given positive guidance and the family must be patient. To actively treat Alzheimer’s disease, improve the patient’s cognitive function, improve the patient’s state of anxiety, and the appetite problem can have some improvement.