The scientific name of Alzheimer’s disease is Alzheimer’s disease. There are three stages in the development of the disease: in the first stage, which lasts 1-3 years, there is mainly a decline in learning new knowledge in terms of memory, a gradual impairment of distant recall, disorientation and structural impairment in terms of visuospatial, deterioration of language skills, naming disorders, sometimes emotional indifference in terms of personality, sometimes irritability or inexplicable The motor function is not affected. In the second stage, which lasts from 2 to 10 years, the impairment of both near and distant memory is very obvious, the visual-spatial aspect shows spatial disorientation and poor skill composition, fluency aphasia in language, a significant decrease in computational power, motor disuse of the ability to use ideas, personality is dominated by indifference, and the motor system is affected and restlessness occurs. In the third stage, 8 to 12 years, there is a severe decline in intelligence, a decrease in motor function, frequent tonic flexion of the limbs, and the sphincter is also affected, with incontinence of the bowels.