Long-term smoking can cause chronic diseases to all systems of the patient’s body, which can induce the occurrence of cerebral infarction, such as coronary atherosclerosis to the heart system; carotid artery system causes carotid atherosclerosis; cerebral blood vessels can cause cerebrovascular atherosclerosis, and even renal artery atherosclerosis. The combination of these causes can cause the patient’s blood pressure increases, blood flow slows down, blood supply is insufficient, which is the basis for the formation of cerebral infarction. Therefore, smoking is a very harmful behavior, quit smoking as soon as possible, and strive to restore health as soon as possible.