Cerebral infarction is possible to cause dementia, which is called vascular dementia. Repeated lacunar cerebral infarcts or multiple infarcts can lead to ischemic necrosis in many parts of the cranium, which affects the cognitive state of the patient, and is mainly manifested by symptoms such as memory loss as well as language and mobility disorders, and this kind of dementia is clinically known as vascular dementia. In addition, Alzheimer’s disease is often referred to as dementia, which is a kind of cognitive impairment disease with insidious onset and progressive aggravation, mostly unrelated to cerebral infarction, but the symptoms can be aggravated by cerebral infarction. It is recommended that patients eat a diet high in protein and vitamin-rich foods, prohibit smoking and alcohol, take appropriate physical exercise every day, keep a happy mood, and actively seek medical attention in the hospital if symptoms occur, so as to avoid delays in the treatment of the disease.