ICU is the intensive care unit, patients with cerebral infarction enter ICU for treatment, usually the patients’ condition is more serious, even life-threatening, and need to be closely monitored and emergency treatment. Patients with cerebral infarction may suffer from headache, vomiting, impaired consciousness, coma and other symptoms. When cerebral infarction occurs with basilar artery occlusion or large cerebral infarction, impaired consciousness may occur, and even cerebral hernia may be formed. Or when the large intracranial artery or vertebrobasilar artery embolism, cerebral edema leads to increased intracranial pressure, seizures can occur. In addition, if cerebral infarction is treated with thrombolytic therapy or debridement decompression, it is also necessary to be observed in the ICU so that timely and effective treatment and resuscitation can be provided when there is a sudden change in the condition. After the condition is stabilized, the patient will be transferred back to the general ward. When the condition of cerebral infarction is serious or in an unstable state, it is necessary to enter ICU for treatment. Cerebral infarction patients or their family members should cooperate with the doctor’s treatment.