Acute infarct foci are foci of cerebral infarction, which are foci of cerebrovascular blood flow interruption and ischemic-ischemic-anoxic necrosis formation of brain tissue. The causes of formation are atherosclerosis, cardiogenic factors and other causes. 1. Atherosclerosis: it is related to high blood pressure, high blood sugar, high age and other reasons. Long-term cerebrovascular atherosclerosis can lead to cerebrovascular occlusion and the formation of acute infarction foci. 2. Cardiogenic factors: when suffering from atrial fibrillation, embolus may be formed in the left atrium, and the embolus dislodges with blood circulation to block the cerebral blood vessels and trigger cerebral embolism, forming acute infarction foci. 3. Other causes: connective tissue diseases, blood system diseases and other diseases can also cause cerebral vascular occlusion, forming acute infarction. In clinical practice, it is necessary to seek professional help for risk factors, actively carry out prevention, and seek medical treatment as soon as possible when there is an acute infarction to avoid delaying the condition.