Cerebral stenosis can cause cerebral infarction, which does not recover naturally. Thrombolytic treatment or surgery to remove the thrombus is required. If the treatment is not timely, it can lead to sequelae such as movement and speech disorders, which will affect the quality of life of patients. Cerebral vascular stenosis is prone to cause cerebral infarction, and the causes of vascular stenosis mainly include atherosclerotic plaques of large arteries, occlusion of small arteries, and cardiogenic embolism. The stenosis of cerebral infarction cannot be recovered by itself, and needs to be treated with thrombolysis or thrombus removal immediately. Patients within 4.5 hours of the onset of cerebral infarction can be thrombolyzed with recombinant tissue-type fibrinogen activator, also known as alteplase, after evaluation by a professional doctor. If the condition permits, the thrombus can also be removed surgically. The onset of cerebral infarction is rapid. If not treated in time, it may lead to motor and speech disorders, and in severe cases, it may be life-threatening, so it is important to seek medical attention for evaluation and treatment.