The medical name of dementia is Alzheimer’s disease, and family care includes dietary management, exercise management and family management. 1. Diet management: according to the degree of cognitive decline and eating disorder, give reasonable dietary nutritional supplements, such as those who can eat to give soft food diet, meat and vegetable, eat more meals, etc., those who have difficulty in swallowing can be nasogastric or enteral nutritional preparation, etc., those who have bulimia control total energy intake, maintain normal body weight and blood sugar, etc.. 2. Exercise management: improve the awareness and enthusiasm of exercise rehabilitation, avoid non-exercise, promote aerobic exercise, and enhance patients’ muscle strength and endurance. 3. Family management: such as creating a quiet and comfortable environment, keeping items with potential safety hazards away from the patient, and placing a note with the family address and contact number in the patient’s pocket to prevent the patient from getting lost. Patients with Alzheimer’s disease should seek timely medical treatment and care under the guidance of professional physicians.