Alzheimer’s disease is a disease of the central nervous system that occurs in old age and preadolescence and is characterized by progressive cognitive dysfunction and impaired behavior. Symptoms such as memory loss may occur during the onset of the disease. It can be treated with oral medication such as donepezil as prescribed by the doctor. Memory loss may occur in the early stages of the disease. As the disease progresses, the original ability to work, study and social contact is gradually reduced, and symptoms such as aphasia, dyscognition and dysfunction may occur. Patients may also experience psychiatric symptoms, such as increased speech, irritability or reticence. In the advanced stage of the disease, there will be emotional apathy, loss of language function, inability to complete simple daily life activities, and ultimately death due to complications such as urinary tract infections and intrapulmonary infections. Patients can take oral drugs such as donepezil and carboplatin as prescribed by doctors to improve cognitive ability; drugs such as olanzapine and fenelastine to improve memory; and sertraline, paroxetine, fluoxetine and olanzapine can be used according to the condition of those with psychiatric symptoms. Alzheimer’s disease should seek timely medical treatment and use drugs under the guidance of a doctor.