The difference between cerebral infarction and dementia can be distinguished from the following three aspects: 1. In terms of clinical etiology, cerebral infarction is caused by various causes of impaired blood supply to the brain, which leads to localized ischemia, hypoxic necrosis or aging of the brain tissue. The causes of dementia can be seen in infections, autoimmune related diseases, and degenerative diseases of the nervous system, or degeneration, etc. 2. In terms of clinical treatment, the treatment of cerebral infarction is mainly to give antithrombotic, anticoagulant, dehydration and lower cranial pressure, as well as the application of secondary prevention drugs, such as aspirin, clopidogrel, etc. Later on. There is no special treatment for dementia, and drugs to improve brain metabolism can be applied.3. In terms of treatment prognosis, the prognosis for the treatment of cerebral infarction is relatively good, but some patients may have varying degrees of sequelae. However, the treatment of dementia often does not have significant therapeutic effects.