Abstract: Objective To investigate the incidence of carotid artery stenosis （CAS） in patients with type 2 diabetes mellitus （T2DM） and to explore the related influencing factors for CAS. Methods The T2DM patients who first visited the endocrine clinic of a hospital in Xi'an from January 2018 to December 2020 were selected as the research object, data collection, physical examination, blood biochemical index detection and carotid ultrasound were carried out. Descriptive analysis was carried out on the detection of CAS in T2DM patients, and univariate and multivariate analysis was carried out on the influencing factors of CAS. Results Among 2 679 T2DM patients, 328 cases were complicated with CAS, and the detection rate was 12.24%. Multivariate Logistic regression analysis showed that older age （OR=1.039）, longer duration of diabetes （OR=1.115）, poor blood glucose control （OR=1.387）, dyslipidemia （OR=1.970） and hypertension （OR=3.725） were risk factors for CAS in T2DM patients. Conclusion T2DM patients with CAS are prominent. Attention should be paid to carotid ultrasound monitoring for T2DM patients with long duration of diabetes and poor blood glucose control. For diabetes patients with CAS risk factors, control and prevention methods should be carried out as soon as possible, so as to avoid the risk of cardiovascular and cerebrovascular diseases.

Key words: Type 2 diabetes mellitus, Carotid artery stenosis, Vascular disease, Influencing factor