Patients should not smoke again after recovering from a brain hemorrhage because smoking has now become an independent risk factor for cerebrovascular disease. Nicotine can aggravate atherosclerosis after smoking and can induce vasospasm in severe cases, so patients should not smoke again after cerebral hemorrhage. It can also aggravate atherosclerosis and induce recurrence of cerebrovascular disease. Cerebrovascular diseases are mostly caused by atherosclerosis, especially cerebral hemorrhage. Consider a patient who has severe atherosclerosis and has increased blood pressure that leads to blood vessel rupture. If the patient continues to smoke, the atherosclerosis can be aggravated, and if vasospasm occurs in severe cases, the patient can have increased blood pressure, cerebral hemorrhage can occur again, or cerebral ischemia can occur due to vasospasm, and ischemic cerebrovascular disease can occur. Therefore, patients recovering from cerebral hemorrhage should not smoke and are advised to quit smoking and limit alcohol consumption.