Abstract: Objective To evaluate CT-A in diagnosing neck vessels^s disease. Methodes: 20 clinical high suspicion of stenosis of neck vessels were examined with CT angiography.Among them,6 cases were clinical suspicion of ischemia of carotid artery,14 cases shown ischemia of vertebral basal system.Using GE(High-speed NX/I) 2 Row spiral CT. analysis with reconstruction techniques(MIP,SSD,MPR & Curve and CTVE). Results: Among the 20 patients, 4 with stenosis of carotid artery and calcified plaque,mainly in the original part and the calcified plaque mainly located at the bifurcation of carotid artery,2 cases with calcified spot in endovascular wall at bifurcation part were noted by CTVE.12 cases with stenosis of vertebral artery; 2 cases shown zigzagging with circuitous,no stenosis by CTVE. Conclusion: CT-A is a fast,easy,safe and non-traumatic technique,it can show the main vessels of neck,with a well foreground of clinical application.