Alzheimer’s disease (AD) is a progressive neurodegenerative disease with insidious onset. It is clinically characterized by memory impairment, aphasia, dysarthria, dyscognition, visuospatial skills impairment, executive dysfunction, and personality and behavioral changes, and other comprehensive dementia manifestations, the etiology of which has not yet been identified. those who develop the disease before the age of 65 years are referred to as early-onset dementia, and those who develop the disease after the age of 65 years are referred to as Alzheimer’s disease. At present, there is no specific drug for Alzheimer’s disease, and it is very important to do a good job of care. The care should start from the following aspects: 1, help the patient’s daily life: dementia in the elderly in daily life, poor self-care ability, the family asked them to get up and go to bed on time, meals, so that life is close to the normal pattern. Maintain good personal hygiene habits. Ask them to brush their teeth and wash their faces in the morning and evening, cut their nails diligently, wash their hair and take a bath regularly, and change their underwear and bedding diligently. During the daytime, try to carry out some activities that are good for physical and mental health. Patients often have sleep disorders, to create conditions for patients to fall asleep. 2.Strengthen the patient’s functional training: it must be emphasized that helping the patient to take care of his personal life is not to help the patient to do everything, the meaning is to supervise, check and guide, and the purpose is to protect the patient’s life needs, train his ability to take care of his own life, and slow down the decline of intelligence. 3, pay attention to safety care: do not let the patient go out alone, so as not to get lost, clothing bag is best to put a written patient’s name, address, contact number of the card or cloth, such as in case of loss, easy to find. Home power, knives and scissors and other dangerous goods should be placed in a safe place to prevent the patient from accidents. It is best to be accompanied at all times. 4.Improve the family environment: family facilities should facilitate the patient’s life, activities and fun, so that the patient will realize the family’s concern and support for him, and encourage the patient to establish confidence in overcoming the disease.