Aim All the patients had received digital subtraction angiography to investiagte the relationship between the clinical features of carotid transient ischemic attacks and intracranial or extracranial angiostenosis. Methods The frenquency of senosis of the intra-cranial and extracranial arteries in digstal subtraction angiography of 251 patients with carotid transient ischemic attacks was caiculated. The frequency of stenosis of arteries in various age groups was compared. Results Among the 251 patients, cerebral artery stenosis was found in 248 （98.8%）. Totally 688 arteries were detected. Anterior circulation lesions in 587 （85.3%）, posterior circulation lesions 101 （14.7%）. In yonug group, the frequency of stenosis of intracranial artery was higher than extracranial artery, while in the old group, the frequency of stenosis of extracranial artery was higher than intracranial artery. In the old group, the frequency of stenosis of extracranial artery was higher than the middle-age group and young group, while in the middle-age group, the frequency of stenosis of extracranial artery was higher than young group. Conclusion In the study, cerebral artery stenosis distributes characteristicly with age.