Cerebellar atrophy is not Alzheimer’s disease. Cerebellar atrophy refers to the phenomenon of atrophy of the cerebellum. The main function of the cerebellum is to manage the coordination and balance of the human body. People with cerebellar atrophy walk less steadily and have uncoordinated movements, which is mainly a phenomenon in this regard. Alzheimer’s disease mainly refers to brain atrophy, patients will show memory, attention decline, calculating power, inference, judgment decline, patients’ ability to daily life decline. Some patients experience psychiatric symptoms, such as hallucinations, as well as anxiety, depression, and sleep disturbances. Therefore, cerebellar atrophy and Alzheimer’s disease are two completely different concepts, and the appearance of cerebellar atrophy must be seen in the neurology department of a regular hospital.